DDR5 DIMM Architectures The DDR5 generation of Double Data Rate DRAM memories has experienced rapid adoption in recent years. In particular, the JEDEC-defined DDR5 Dual Inline Memory Module (DIMM) cards have become a mainstay for systems looking for high-density, high-bandwidth, off-chip random access memory[1]. Within a short time, the DIMM architecture evolved from an interconnected hierarchy of only SDRAM memory devices (UDIMM[2]) to complex subsystems of interconnected components (RDIMM/LRDIMM/MRDIMM[3]). DIMM Designs and Popular Verification Use Cases The growing complexity of the DIMMs presented a challenge for pre-silicon verification engineers who could no longer simply validate against single DDR5 SDRAM memory models. They needed to consider how their designs would perform against DIMMs connected to each channel and operating at gigahertz clock speeds. To address this verification gap, Cadence developed DDR5 DIMM Memory Models that encapsulated all of the architectural complexities presented by real-world DIMMs based on a robust, easy-to-use, easy-to-debug, and easy-to-reconfigure methodology. This memory-subsystem-in-a-single-instance model has seen explosive adoption among the traditional IP Developer and SOC Integrator customers of Cadence Memory Models. The Cadence DIMM models act as a single unit with all of the relevant DIMM components instantiated and interconnected within, and with all AC/Timing parameters among the various components fully matched out-of-the-box, based on JEDEC specifications as well as datasheets of actual devices in the market. The typical use-case for the DIMM models has been where the DUT is a DDR5 Memory Controller + PHY IP stack, and the validation plan mandated compliance with the JEDEC standards and Memory Device vendor datasheets. Unique Use Case for the DIMM Discrete Component Models Although the Cadence DIMM models have enjoyed tremendous proliferation because of their cohesive implementation and unified user API, the actual DIMM Models are built on top of powerful, flexible discrete component models, each of which was designed to stand on its own as a complete SystemVerilog UVM-based VIP. All of these discrete component models exist in the Cadence VIP Catalog as standalone VIPs, complete with their own protocol compliance checking capabilities and their own configuration mappings comprehensively modeling individual AC/Timing parameters. Because of this deliberate design decision, the Cadence DIMM Discrete Component Models can support a unique use-case scenario. Some users seek to develop IC Designs for the various DIMM components. Such users need verification environments that can model the individual components of a DIMM and allow them the option to replace one or another component with their Component Design IP. They can then validate that their component design is fully compatible with the rest of the components on the DIMM and meets the integrity of the overall DIMM compliance with JEDEC standards or Memory Vendor datasheets. The Cadence Memory VIP portfolio today includes various examples that demonstrate how customers can create DIMM “wrappers” by selecting from among the available DIMM discrete component models and “stitching” them together to build their own custom testbench around their specific Component Design IP. A Solution for Unique Component Scenarios The Cadence DDR5 DIMM Memory Models and DIMM Discrete Component Models can provide users with a flexible approach to validating their specific component designs with a fully populated pre-silicon environment. Augmented Verification Capabilities When the DIMM “wrapper” model is augmented with the Cadence DFI VIP[4] that can simulate an MC+PHY stack and offers a SystemVerilog UVM test API to the verification engineer, the overall testbench transforms into a formidable pre-silicon validation vehicle. The DFI VIP is designed as a combination of an independent DFI MC VIP and a DFI PHY VIP connected to each other via the DFI Standard Interface and capable of operating seamlessly as a single unit. It presents a UVM Sequence API to the user into the DFI MC VIP with the Memory Interface of the PHY VIP connected to the DIMM “wrapper” model. With this testbench in hand, the user can then fully take advantage of the UVM Sequence Library that comes with the DFI VIP to enable deep validation of their Component Design inside the DIMM “wrapper” model. Verification Capabilities Further Enhanced A possible further enhancement comes with the potential addition of an instance of the Cadence DIMM Memory Model in a Passive Monitor mode at the DRAM Memory Interface. The DIMM Passive Monitor consumes the same configuration describing the DIMM “wrapper” in the testbench, and thus can act as a reference model for the DIMM wrapper. If the DIMM Passive Monitor responds successfully to accesses from the DFI VIP, but the DIMM wrapper does not, then it exposes potential bugs in the DUT Components or in the settings of their AC/Timing parameters inside the DIMM wrapper. Debuggability, Interface Visibility, and Protocol Compliance One of the key benefits of the DIMM Discrete Component Models that become manifest, whether in terms of the unique use-case scenario described here, or when working with the wholly unified DDR5 DIMM Memory Models, is the increased debuggability of the protocol functionality. The intentional separation of the discrete components of a DIMM allows the user to have full visibility of the memory traffic at every datapath landmark within a DIMM structure. For example, in modeling an LRDIMM or MRDIMM, the interface between the RCD component and the SDRAM components, the interface between the RCD component and the DB components, and the interface between the SDRAM components and the DB components—all are visible and accessible to the user. The user has full access to dump the values and states of the wire interconnects at these interfaces to the waveform viewer and thus can observe and correlate the activity against any protocol violations flagged in the trace logs by any one or more of the DIMM Discrete Component Models. Access to these interfaces is freely available when using the DIMM Discrete Component Models. On the unified DDR5 DIMM Memory Models, a feature called Debug Ports enables the same level of visibility into the individual interconnects amidst the SDRAM components, RCD components, and DB components. When combined with the Waveform Debugger[5] capability that comes built-in with the VIPs and Memory Models offered by Cadence and used with the Cadence Verisium Debug[6] tool, the enhanced debuggability becomes a powerful platform. With these debug accesses enabled, the user can pull out transaction streams, chip state and bank state streams, mode register streams, and error message streams all right next to their RTL signals in the same Verisium Debug waveform viewer window to debug failures all in one place. The Verisium Debug tool also parses all of the log files to probe and extract messages into a fully integrated Smart Log in a tabbed window fully hyperlinked to the waveform viewer, all at your fingertips. A Solution for Every Scenario Cadence's DDR5 DIMM Memory Models and DIMM Discrete Component Models , partnered with the Cadence DFI VIP, can provide users with a robust and flexible approach to validating their designs thoroughly and effectively in pre-silicon verification environments ahead of tapeout commitments. The solution offers unparalleled latitude in debuggability when the Debug Ports and Waveform Debugger functions of the Memory Models are switched on and boosted with the use of the Cadence Verisium Debug tool. [1] Shyam Sharma, DDR5 DIMM Design and Verification Considerations , 13 Jan 2023. [2] Shyam Sharma, DDR5 UDIMM Evolution to Clock Buffered DIMMs (CUDIMM) , 23 Sep 2024. [3] Kos Gitchev, DDR5 12.8Gbps MRDIMM IP: Powering the Future of AI, HPC, and Data Centers , 26 Aug 2024. [4] Chetan Shingala and Salehabibi Shaikh, How to Verify JEDEC DRAM Memory Controller, PHY, or Memory Device? , 29 Mar 2022. [5] Rahul Jha, Cadence Memory Models - The Gold Standard , 15 Apr 2024. [6] Manisha Pradhan, Accelerate Design Debugging Using Verisium Debug , 11 Jul 2023.

When the Arduino Mega2560 is added to the first serial port, the dynamic memory is 2000 bytes, and when the second serial serial is added, the dynamic memory is 4000 bytes. Now I need to add the third Serial serial port. The dynamic memory is 6000 bytes. Due to the many variables in the program itself, the dynamic memory is not enough. Please help me how to save the dynamic memory?

While doing the lvs it's showing an error in gnd connection, I am not being able to understand exactly what is the error and what do I need to do to remove this error?

ncsim will consume an increasing ammount of memory when a function has an output port that return an associative array which was not initialized. My simulator version is 12.10-s011.

Below is a code example to reproduce the failure. The code is inside a class (uvm_object):

function void a_function(output bit ret_val[int]);

// empty 

endfunction : get_cov

Jon Stewart spoke about why the Democrats lost the 2024 election during his "Daily Show" monologue.

TORCHBEARERS in the virtual and physical worlds will jointly light up the cauldron for the 19th Asian Games in Hangzhou tomorrow, organizers said yesterday. “A green, digital and intelligent Asian Games

CHINESE President Xi Jinping will attend the opening ceremony of the 19th Asian Games in Hangzhou and hold a welcoming banquet and bilateral events for foreign leaders attending the opening ceremony,

Check here each week to keep up with the latest from John MacArthur's pulpit at Grace Community Church.

Check here each week to keep up with the latest from John MacArthur's pulpit at Grace Community Church.

Media Conference Panelists: Democracies Are In Trouble Media Conference Panelists: Democracies Are In Trouble

Fighting Social Media’s Demons Fighting Social Media’s Demons

THE HAGUE, Netherlands —  Police detained several people Sunday for taking part in a demonstration in central Amsterdam that had been outlawed following violence targeting fans of an Israeli soccer club, a local broadcaster reported.  Amsterdam Mayor Femke Halsema banned all demonstrations over the weekend in the aftermath of the grim scenes of youths on scooters and on foot attacking Maccabi Tel Aviv supporters on Thursday and Friday in what was widely condemned as a violent outburst of antisemitism in the Dutch capital.  Israel's ambassador to the Netherlands said that 2,000 Israelis were brought home on special flights from Amsterdam over the past few days  Before the match against Ajax, Maccabi fans also tore a Palestinian flag off a building in Amsterdam and chanted anti-Arab slogans on their way to the stadium. There were also reports of Maccabi fans starting fights.  Video on local broadcaster AT5 showed police detaining one man Sunday who was taking part in a small demonstration on the central Dam Square. The protesters yelled slogans including "Free, free Palestine." AT5 reported that about 20 people were detained.  Amsterdam Municipality said on X that police had begun arresting demonstrators who refused to leave the square, which is in the heart of the city's downtown shopping area and close to the historic canal network.  Organizers of the protest went to court on Sunday morning seeking an injunction to allow the demonstration, but a judge upheld the ban imposed by the municipality.  At the hearing, senior Amsterdam police officer Olivier Dutilh said that there were again incidents overnight targeting people thought to be Jewish, including some being ordered out of taxis and others being asked to produce their passports to confirm their nationality.  Police launched a large-scale investigation Friday after gangs of youths conducted what Amsterdam's mayor called "hit and run" attacks on fans that were apparently inspired by calls on social media to target Jewish people. Five people were treated at hospitals and more than 60 suspects were arrested.  Israeli Foreign Minister Gideon Saar rushed to the Netherlands on Friday and offered Israel's help in the police investigation. He met on Saturday with Dutch Prime Minister Dick Schoof and said in a statement that the attacks and demands to show passports "were reminiscent of dark periods in history." 

The U.S. Senate's Democratic majority began a crusade on Tuesday to confirm as many new federal judges nominated by President Joe Biden as possible to avoid leaving vacancies that Republican Donald Trump could fill after taking office on Jan. 20. With Republicans set to take control of the chamber on Jan. 3, the Senate on Tuesday held a confirmation vote on one of Biden's judicial nominees - former prosecutor April Perry - for the first time since Trump won the Nov. 5 presidential election. The Senate voted 51-44 in favor of her becoming a U.S. district court judge in Illinois. All told, Biden has announced another 30 judicial nominees who are awaiting Senate confirmation votes. Sixteen have already have been reviewed by the Senate Judiciary Committee and are awaiting a final confirmation vote by the full Senate. Another 14 nominees are awaiting committee review. The U.S. Constitution assigns to the Senate the power to confirm a president's nominees for life-tenured seats on the federal judiciary. "We are going to get as many done as we can," Democratic Senate Majority Leader Chuck Schumer said in a statement. Trump made 234 judicial appointments during his first four years in office, the second most of any president in a single term, and succeeded in moving the judiciary rightward - including building a 6-3 conservative majority on the U.S. Supreme Court with three appointees. Biden has appointed a host of liberal judges. Since the beginning of his presidency in 2021, the Senate has confirmed 214 Biden judicial nominees, including liberal Supreme Court Justice Ketanji Brown Jackson. About two-thirds were women, and the same share were racial minorities. Senate Democrats are under pressure to swiftly confirm the remaining nominees, along with any new picks Biden may name in the waning weeks of his presidency. How many nominees Senate Democrats will be able to confirm remains to be seen. Trump in a social media post on Sunday called on the Senate to halt approving Biden's nominees, saying, "Democrats are looking to ram through their Judges." Billionaire Trump backer Elon Musk on Tuesday wrote on social media that "activist" judicial nominees are "bad for the country." Mike Davis, a Trump ally at the conservative judicial advocacy group Article III Project, in another post urged Senate Republicans to vote down all judicial appointments until January. "The American people voted for monumental change," Davis wrote on social media last week. "Grind the Senate to a halt." Current Senate Republican leader Mitch McConnell's office declined comment. McConnell has consistently opposed Biden's nominees and, as majority leader, was instrumental in getting Trump's previous nominees confirmed. Trump's judicial appointees have been involved in major decisions welcomed by conservatives including Supreme Court rulings rolling back abortion rights, widening gun rights, rejecting race-conscious collegiate admissions and limiting the power of federal regulatory agencies. Judicial nominees require a simple majority for confirmation. Democrats currently hold a slim 51-49 majority, meaning that they can ill afford any defections or absences if Republicans show up in force to oppose Biden's nominees during the chamber's post-election "lame duck" session. West Virginia Senator Joe Manchin, an independent who caucuses with the Democrats, has said he would not vote for any nominee who does not garner at least one Republican vote. Must-pass legislation like a spending bill to avert a government shutdown also may consume precious time during the session. 'Every possible nominee' Biden's allies have said a concerted push to confirm his remaining nominees would allow him to build on his legacy of helping to diversify a federal bench long dominated by white men. He is not done nominating judges. On Friday, Biden announced his first post-election nominee, Tali Farhadian Weinstein, who after unsuccessfully running in the 2021 Democratic primary to be Manhattan district attorney was picked for a job as a federal district judge in New York. A spokesperson for Senator Dick Durbin, the No. 2 Senate Democrat and chair of the Judiciary Committee, said in a statement that he "aims to confirm every possible nominee before the end of this Congress." White House spokesperson Andrew Bates on Monday noted that during Trump's first term, the Republican-controlled Senate confirmed 18 judges after Biden had won the 2020 election but before he took office. Pending nominees include five to the influential federal appeals courts. Republicans said before the election that they had the votes to block two of them: Adeel Mangi, who would become the first Muslim federal appellate judge, and North Carolina Solicitor General Ryan Park, who unsuccessfully defended the race-conscious admissions policies before the Supreme Court. There are several others nominated to serve as trial court judges like Perry, a former prosecutor now working at Chicago-headquartered GE HealthCare who would join the bench in Illinois. Biden nominated her to a judgeship in April after her prior nomination to become Chicago's top federal prosecutor was blocked by Republican Senator JD Vance. Vance began placing a hold on Biden's nominees to the U.S. Justice Department in 2023 after Special Counsel Jack Smith secured the first of two federal indictments against Trump, who subsequently picked the senator as his vice presidential running mate.

… Seek targeted relief measures to save media, nation’s economy The Nigerian Guild of Editors (NGE), arising from the three-day All Nigeria Editors Conference (ANEC) in Yenagoa, the Bayelsa State Capital, has called on the federal government to urgently mitigate the negative impact of fuel subsidy removal and the exchange rate volatility on the economy. […]

The post Ease impact of fuel subsidy removal, exchange rate volatility, editors urge FG first appeared on Business Hallmark.

Lahore, Pakistan – The much-awaited Lahore Entertainment City, a project by Al Jalil Developers, celebrated its grand opening on December 11, 2023, featuring a captivating performance by the famous singer Atif Aslam. Alongside this cultural extravaganza, the event spotlighted the project’s flexible payment plan, a significant step towards making upscale living accessible to a wider ... Read more

The post Lahore Entertainment City Payment Plan Introduced At A Lavish Ceremony appeared first on Pakistan Tribune.

Port-au-Prince, Haiti — A transitional council created to reestablish democratic order in Haiti signed a degree Sunday firing the country's interim Prime Minister Garry Conille and replacing him with Alix Didier Fils-Aime, a businessman who was previously considered for the job. The decree, set to be published on Monday, was provided to The Associated Press by a government source. It marks even more turmoil in an already rocky democratic transition process for Haiti, which hasn't held democratic elections in years in large part due to the soaring levels of gang violence plaguing the Caribbean nation. Fils-Aime, is the former president of Haiti's Chamber of Commerce and Industry and in 2015 ran an unsuccessful campaign for Senate. The businessman studied at Boston University and was previously considered for the position as a private sector candidate for the post before Conille took the seat. Conille, a longtime civil servant who has worked with the United Nations, served as prime minister for only six months. The transitional council was established in April, tasked with choosing Haiti's next prime minister and Cabinet with the hope that it would help quell turmoil Haiti. But the council has been plagued with politics and infighting and has long been at odds with Conille. Organizations like the Organization of American States tried and failed last week to mediate disagreements in an attempt to save the fragile transition, according to reporting from The Miami Herald. The process suffered another blow in October when three members on the council faced corruption accusations, from anti-corruption investigators alleging that they demanded $750,000 in bribes from a government bank director to secure his job. The report was a significant blow to the nine-member council and is expected to further erode people's trust in it. Those same members accused of bribery, Smith Augustin, Emmanuel Vertilaire and Louis Gerald Gilles, were among those to sign the decree. Only one member, Edgard Leblanc Fils, did not sign the order.

STOCKHOLM — Lower voter turnout and increasingly contested results globally are threatening the credibility of elections, an intergovernmental watchdog warned on Tuesday, as its sub-index for free and fair elections suffered its biggest decline on record in 2023. In its report, the Stockholm-based International Institute for Democracy and Electoral Assistance (IDEA) said 2023 was the eighth consecutive year with a net decline in overall democratic performance, the longest consecutive fall since records began in 1975. The watchdog bases its Global State of Democracy indexes on more than 100 variables and is using four main categories - representation, rights, rule of law and participation - to categorize performance. The category of democracy related to free and fair elections and parliamentary oversight, a sub-category of representation, suffered its worst year on record in 2023. "This report is a call for action to protect democratic elections," IDEA's Secretary-General Kevin Casas-Zamora said in the report. "The success of democracy depends on many things, but it becomes utterly impossible if elections fail." The think-tank said government intimidation and electoral process irregularities, such as fraudulent voter registration and vote-counting, were increasing. It also said that threats of foreign interference, disinformation and the use of artificial intelligence in campaigns added to challenges. It also said that global voter participation had fallen to 55.5% of eligible voters in 2023 from 65.2% in 2008. Globally, in almost 20% of elections between 2020 and 2024, one of the losing candidates or parties rejected the results. IDEA said that the democratic performance in the U.S., which holds a presidential election this year, had recovered somewhat in the past two years, but the assassination attempt on former President Donald Trump in July highlighted continued risks. "Less than half (47%) of the Americans said the 2020 election was 'free and fair' and the country remains deeply polarized," IDEA said.

The Egyptian Armed Forces' removal of President Morsi has created a number of challenges related to democracy, political stability and the role of Islam.

Demonstrators held flags with Nazi swastikas and reportedly chanted a pro-Donald Trump slogan.

The Democratic Party’s defeat has many causes, but its anti-Zionist wing has clearly contributed to its electoral collapse.

While the expansion of democracy is a key condition for peace, the Achilles’ heel of democracies is that their leaders are constrained by electoral calendars, forcing them to push for peace or delay, whereas autocracies can afford to play the long game to achieve the favorable outcomes they desire. Take, for example, the current wars […]

In 2014, voter turnout for mid-term elections plunged to the lowest rate in 72 years. The overall national turnout was a disgraceful 36.3 percent.  

How can Khamenei's "shadow empire" deteriorate?

Police detain dozens in Amsterdam after demonstrations banned

King Charles leads Remembrance Sunday ceremony

With the upcoming Kovačević ruling, let justice be done for Bosnia’s democracy

God’s love for sinners is a well-documented historical fact. Its verification doesn’t hinge on the consensus of theologians, nor does its validation rest on something we feel. The apostle John points us to the cross as the consummate and undeniable proof of divine love.

The town planning department on Tuesday signed a contract for the demolition of two apartment buildings in the government housing settlement of Platy in Aglandja, Nicosia, as part of the government’s Ktizo plan, which aims atimproving living conditions in refugee estates. According to a statement released by the interior ministry, the agreed cost for the […]

Colorado voters will decide whether to repeal the state constitution's now-defunct marriage definition that only recognizes unions between a man and a woman.

Colorado Democrats looked set to maintain their supermajority in the state House as of Wednesday afternoon, though they fell short of reaching the same threshold in the Senate.

Tremors were felt in various cities of Khyber Pakhtunkhwa as well as Islamabad on Wednesday after a quake jolted Afghanistan’s Badakhshan region.

According to the United States Geological Survey (USGS), the earthquake had a magnitude of 5.1, while the Pakistan Meteorological Department (PMD) reported it as having a 5.3 magnitude.

The USGS said the quake’s centre was located 37 kilometres west-southwest of Afghanistan’s Ishkashim town and had a 220.7km depth.

The earthquake struck at 10:13am (Pakistan time), both the USGS and PMD confirmed.

No casualties have been reported so far.

DawnNewsTV reported that the tremors were felt in Peshawar and its adjoining areas, as well as Islamabad.

Speaking to DawnNewsTV, two correspondents based in the cities said the quake caused people to evacuate buildings.

More to follow

4250tn memory install guide

This paper explores how oil price windfalls impact labor market regulation across 83 countries from 1970 to 2014.

Extending across seven provinces and two autonomous regions, the Yellow River Ecological Corridor (YREC) comprises the second largest river basin in the People's Republic of China (PRC) with a population of 120 million. The basin is critical for food security yet faces complex ecological and environmental challenges. The region suffers from severe water scarcity, impacts from climate change and environmentally unsustainable development.

Taiwan’s first ever minister of digital affairs has transformed politics, using online platforms and AI to give power to the country’s citizens – with lessons for us all

Many fear that voters are being manipulated by political campaigns that use Facebook ads, TikTok and YouTube videos, but research reveals a more surprising story

Confidence in politics is falling around the world. Can scientific insights help us create a fairer, smarter foundation for government?

A technique to charge a battery inside a quantum computer relies on sorting qubits in an imitation of Maxwell’s demon, a 19th-century thought experiment once thought to break the laws of physics

Title: U.S. to Be Removed From E.U. Safe Travel List
Category: Health News
Created: 8/30/2021 12:00:00 AM
Last Editorial Review: 8/30/2021 12:00:00 AM

Title: Sleep Boosts Memory for Parkinson's Patients, Study Suggests
Category: Health News
Created: 8/24/2012 6:05:00 PM
Last Editorial Review: 8/27/2012 12:00:00 AM