The mere threat of immigration enforcement could have severe consequences for students' mental health, school engagement, grades, and post-high school lives, a new study finds.

The mere threat of immigration enforcement could have severe consequences for students' mental health, school engagement, grades, and post-high school lives, a new study finds.

"Going into overseas ministry made me face reality", says 28-year old Vanilda Vaz from Brazil. She has been travelling through Latin America to tell as many people as possible about her work in South Asia.

As some districts try to dismantle racist and biased policies and practices, they are creating high-profile positions to lead that public, sometimes hostile, reckoning.

The gut microbiome doesn't just regulate digestion and metabolism; it plays a critical role in how we react to stress.

The Latin American Community Center (LACC) presents a unique art contest and invites participants to explore addiction through artistic expression. ArtAddiction, a juried art competition hosted by the LACC’s Prevention Promoters Program, seeks to explore addiction, recovery, and mental health through artistic expression. This year’s theme, “Change IS A Process,” has categories that include painting, drawing, […]

Read the in depth Review of CORSAIR DOMINATOR PLATINUM RGB First Edition DDR5 DRAM Memory Kit PC Components. Know detailed info about CORSAIR DOMINATOR PLATINUM RGB First Edition DDR5 DRAM Memory Kit configuration, design and performance quality along with pros & cons, Digit rating, verdict based on user opinions/feedback.

Today's high-performance computing systems often require the designer to instantiate multiple CPU or DSP cores in their subsystem. However, the performance gained by using multiple CPUs comes with additional programming complexity, especially when accessing shared memory data structures and hardware peripherals. CPU cores need to access shared data in an atomic fashion in a multi-core environment. Locking is the most basic requirement for data sharing. A core takes the lock, accesses the shared data structure, and releases the lock. While one core has the lock, other cores are disallowed from accessing the same data structure. Typically, locking is implemented using an atomic read-modify-write bus transaction on a variable allocated in an uncached memory.

This blog shares the AXI4 locking mechanism when implementing an Xtensa LX-based multi-core system on a Xilinx FPGA platform. It uses a dual-core design mapped to a KC705 platform as an example.

Exclusive Access to Accomplish Locking

The Xtensa AXI4 manager provides atomic access using the AXI4 atomic access mechanism. While Xtensa's AXI manager interface generates an exclusive transaction, the subordinate's interface is also expected to support exclusive access, i.e., AXI monitoring. Xilinx BRAM controller's AXI subordinate interface does not support exclusive access, i.e., AXI monitoring: AXI Feature Adoption in Xilinx FPGAs.

Leveraging Xtensa AXI4 Subordinate Exclusive Access

The Xtensa LX AXI subordinate interface supports exclusive access. One approach is to utilize this support and allocate locks in one of the core's local data memories. Ensure that the number of external exclusive managers is configured, typically to the number of cores (Figure 1).

Figure 1

Note that the Xtensa NX AXI subordinate interface does not support exclusive access. For an Xtensa NX design, shared memory with AXI monitoring is required.

In Figure 2, the AXI_crossbar#2 (block in green) routes core#0's manager AXI access (blue connection) to both core's local memories. Core#1's manager AXI (yellow connection) can also access both core's local memories. Locks can be allocated in either core's local data memory.

In-Bound Access on Subordinate Interface

On inbound access, the Xtensa AXI subordinate interface expects a local memory address, i.e., an external entity needs to present the same address as the core would use to access local memory in its 4GB address space. AXI address remap IP (block in pink) translates the AXI system address to each core's local address. For example, assuming locks are allocated in core#0's local memory, core#1 generates an AXI exclusive to access a lock allocated in core#0's local memory (yellow connection). AXI_crossbar#2 forwards transaction to M03_AXI port (green connection). AXI_address_remap#1 translates the AXI system address to the local memory address before presenting it to core#0's AXI subordinate interface (pink connection).

It is possible to configure cores with disjoint local data memory addresses and avoid the need for an address remap IP block. But then it will be a heterogeneous multi-core design with a multi-image build. An address remap IP is required to keep things simple, i.e., a homogeneous multi-core with a single image build. A single image uses a single memory map. Therefore, both cores must have the same view of a lock, i.e., the lock's AXI bus address must be the same for both.

Figure 2

AXI ID Width

Note Xtensa AXI manager interface ID width=4 bits. Xtensa's AXI subordinate interface ID width=12 bits. So, you must configure AXI crossbar#2 and AXI address remap AXI ID width higher than 4. AXI IDs on a manager port are not globally defined; thus, an AXI crossbar with multiple manager ports will internally prefix the manager port index to the ID and provide this concatenated ID to the subordinate device. On return of the transaction to its manager port of origin, this ID prefix will be used to locate the manager port, and the prefix will be truncated. Therefore, the subordinate port ID is wider in bits than the manager port ID. Figure 3 shows the Xilinx crossbar IP AXI ID width configuration.

Figure 3

Software Tools Support

Cadence tools provide a way to place locks at a specific location. For more details, please refer to Cadence's Linker Support Packages (LSP) Reference Manual for Xtensa SDK. .xtos.lock(green) resides in core#0's local memory and holds user-defined and C library locks. The lock segment memory attribute is defined as shared inner (cyan) so that L32EX and S32EX instructions generate an exclusive transaction on an AXI bus. See Figure 4. The stack and per-core Xtos and C library contexts are allocated in local data memory (yellow).

…………..LSP memory map………….
BEGIN dram0
0x40000000: dataRam : dram0 : 0x8000 : writable ;
dram0_0 : C : 0x40000400 - 0x40007fff : STACK : .dram0.rodata .clib.percpu.data .rtos.percpu.data .dram0.data .clib.percpu.bss .rtos.percpu.bss .dram0.bss;
END dram0
…………………
BEGIN sysViewDataRam0
0xA0100000: system : sysViewDataRam0 : 0x8000 : writable, uncached, shared_inner;
lockRam_0 : C : 0xA0100000 - 0xA01003ff : .xtos.lock;
END sysViewDataRam0
…………..

Figure 4

Please visit the Cadence support site for more information on emulating Xtensa cores on FPGAs.

An increasing number of embedded designs are multi-core systems. At the pre-silicon stage, customers use a simulation platform for architectural exploration and software development. Architects want to quantify the impact of the number of cores, local memory size, system memory latency, and interconnect bandwidth. Software teams wish to have a practical development platform that is not excruciatingly slow. This blog shares a recipe for simulating Cadence DSPs in a multi-core design as separate x86 processes. The purpose is to reduce simulation time for customers with simple multi-core models where cores interact only through shared memory. It uses a Vision Q8 multi-core design to share details of the XTSC (Xtensa SystemC) model, software application, commands, and debugging. Note the details shared are for a simulation run on an Ubuntu Linux machine, Xtensa tools version RI-2023.11, and core configuration XRC_Vision_Q8_AODP. Complex vs. Simple Model A complex model (Figure 1) is one in which one core accesses another core's local memory, or there are inter-core interrupts. Simulation runs as a single x86 process. Figure 1 A simple model (Figure 2) is one in which cores interact only through shared memory. Shared memory is a file on the Linux host. Figure 2 Multiple x86 Process – Simple Model As depicted in Figure 3, each core is simulated using a separate x86 process. Cores use barriers and locks placed in shared memory for synchronization and data sharing. Locks are placed in un-cached memory that support exclusive subordinate access. The XTSC memory component, xtsc_memory , supports exclusive subordinate access. Cadence software tools provide a way to define memory regions as cached or uncached. For more details, please refer to Cadence's Linker Support Packages (LSP) Reference Manual for Xtensa SDK . Figure 3 Demo Application A demo application performs a 128x128 matrix multiplication. Work is divided so that each of the 32 cores computes four rows of the 128x128 result matrix. Cores use barriers to synchronize. Cadence tools provide APIs for synchronization and locking. Please refer to Cadence's System Software Reference Manual for more details. Note without a higher-level lock, prints from all cores will get mixed up. Therefore, in the demo application, only core#0 prints. SystemC Simulation The following sample command runs the 32-core simulation in such a way that each core is a separate x86 process. It runs a matrix multiplication application in cycle-accurate mode with logging off. >>for (( N=0; N >xtsc-run -define=NumCores=32 -define=N=0 -define=LOGGING=0 -define=TURBO=0 --xxdebug=sync -i=coreNN.inc -sc_main=sc_main.cpp -no_sim Modify the sc_main.cpp generated for core#0 to create a generic sc_main.cpp to build a single simulation executable for all cores. The Xtensa SDK includes Makefile targets to build custom simulations. By default, the simulation runs in cycle-accurate mode. Fast functional (Turbo) mode provides additional improvement over cycle-accurate mode. Note that the fast functional mode has an initialization phase, so gains are visible only when running an application with longer run times. Simulation Wall Time The table captures simulation wall time improvements. Note that these are illustrative wall time numbers. Actual wall time numbers and improvements will depend on your host machine's performance and your application. Simulation Type Wall Time Comments Single process cycle accurate mode 17500 seconds Multiple x86 processes cycle accurate mode 1385 seconds 12X faster than single process Multiple x86 processes turbo mode 415 seconds 3X faster than cycle accurate mode Debugging Attaching a debugger to each of the individual x86 core simulation processes is possible. Synchronous stop/resume and core-specific breakpoints are also supported. Configure the Xplorer launch configuration and attach it to the running simulation processes as follows (Figure 5) Figure 5 Figure 6 shows 32 debug contexts. Figure 6 As shown, using Xtensa SDK, you can create a multi-core simulation that functions as a practical software development platform. Please visit the Cadence support site for information on building and simulating multi-core Xtensa systems.

From historically underperforming when compared with its peers, the German federal state of Rhineland-Palatinate is now attracting major investment projects on the back of its auto and electrification expertise.

Uruguay-based Zonamerica has successfully expanded into Colombia and China, and is now looking to export its model to other parts of Asia and Africa.

Up to 18 countries across Latin America have joined China’s new Belt and Road Initiative, hoping to boost their infrastructure development and investment.  

The fallout from the pandemic looks set to stall trade and investment to Latin America.

Ukraine abandoned its constitutional neutrality to pursue EU and NATO membership only in 2019, years after Russia annexed Crimea and backed pro-Russia separatists in Donbas. NATO considered Ukraine’s membership after Moscow invaded Georgia, starting a war in Europe.

Israel’s counterattacks on Iran underscore high stakes in Middle East.

Migration, trade, the defence of democracy, the confrontation with China and the collapse of multilateralism are issues that shed more doubts than certainties on Latin America’s expectations of the imminent presidential elections in the United States. Interest and tension have grown after dozens of polls and bookmakers have shown similar chances of victory for Democrat […]

If God is still speaking to His people today—particularly through mental impressions and premonitions—how can believers exercise discernment when it comes to interpreting and applying these divine messages? Put simply, how is following the private, subjective “leading” of the Lord any more reliable than gazing into a crystal ball?

The struggle for women’s right to decide in Latin America and the Caribbean, for their access to legal, safe and free abortion continues in the region, with some countries fully criminalising it, others with severe regulations, and a few guaranteeing better conditions, while threats of regression persist. This Saturday 28 September marks, as every year, […]

How have Latin American exporters been affected by the rapid increase in the PRC's exports to the USA and other large markets? Are PRC and Latin American exports complementary or competitive with each other?

12c operators manual platinum

12c platinum manual

Memory formation is contingent on molecular and structural changes in neurons in response to learning stimuli—a process known as neuronal plasticity. The initiation step of mRNA translation is a gatekeeper of long-term memory by controlling the production of plasticity-related proteins in the brain. The mechanistic target of rapamycin complex 1 (mTORC1) controls mRNA translation, mainly through phosphorylation of the eukaryotic initiation factor 4E (eIF4E)-binding proteins (4E-BPs) and ribosomal protein S6 kinases (S6Ks). mTORC1 signaling decreases throughout brain development, starting from the early postnatal period. Here, we discovered that in mice, the age-dependent decrease in mTORC1 signaling occurs selectively in excitatory but not inhibitory neurons. Using a gene conditional knockout (cKO) strategy, we demonstrate that either up- or downregulating the mTORC1-4E-BP2 axis in GAD65 inhibitory interneurons, but not excitatory neurons, results in long-term object recognition and object location memory deficits. Our data indicate that the mTORC1 pathway in inhibitory but not excitatory neurons plays a key role in memory formation.

Pilocytic astrocytomas are the most common pediatric brain tumors, typically presenting as low-grade neoplasms. We report two cases of pilocytic astrocytoma with atypical tumor progression. Case 1 involves a 12-yr-old boy with an unresectable suprasellar tumor, negative for BRAF rearrangement but harboring a BRAF p.V600E mutation. He experienced tumor size reduction and stable disease following dabrafenib treatment. Case 2 describes a 6-yr-old boy with a thalamic tumor that underwent multiple resections, with no actionable driver detected using targeted next-generation sequencing. Whole-genome and RNA-seq analysis identified an internal tandem duplication in FGFR1 and RAS pathway activation. Future management options include FGFR1 inhibitors. These cases demonstrate the importance of escalating molecular diagnostics for pediatric brain cancer, advocating for early reflexing to integrative whole-genome sequencing and transcriptomic profiling when targeted panels are uninformative. Identifying molecular drivers can significantly impact treatment decisions and improve patient outcomes.

The signs were all there for Latinos to break for Republicans.

The U.S. Food and Drug Administration posted a video:

The FDA oversees prescription, generic, biosimilars, and over-the-counter drugs. But what is the FDA’s role when it comes to drug regulation? Learn more in this short video from FDA’s Center for Drug Evaluation and Research (CDER).

The U.S. Food and Drug Administration posted a video:

The FDA oversees prescription, generic, biosimilars, and over-the-counter drugs. But what is the FDA’s role when it comes to drug regulation? Learn more in this short video from FDA’s Center for Drug Evaluation and Research (CDER).

HONG KONG — China's National Health Commission (NHC) published its first set of guidelines to standardise the diagnosis and treatment of obesity, with more than half of China's adults already overweight and obese, and the rate expected to keep rising.  The guidelines, made public on October 17, come as China experiences an upward morbidity trend of its overweight and obese population. The rate of overweight or obese people could reach 65.3 per cent by 2030, the NHC said.   "Obesity has become a major public health issue in China, ranking as the sixth leading risk factor for death and disability in the country," the guidelines said. China is facing a twin challenge that feeds its weight problem: In a modernising economy underpinned by technological innovation, more jobs have become static or desk-bound, while a prolonged slowdown in growth is forcing people to adopt cheaper, unhealthy diets.

Nov 18, 2022

Former Colombian President Iván Duque discussed Latin America’s resurgent left wing and advocated for environmental action at the Harvard Kennedy School on Thursday afternoon.

Apr 10, 2023

The following is an event write-up about the recent Future of Diplomacy Project (FDP) seminar on “The Geopolitics of Latin America amid the War in Ukraine and China-U.S. Tensions” moderated by Negah Angha, Fellow at the Institute of Politics, on March 29, 2023.

Los artistas m�s grandes llegan a los Premios Billboard de la M�sica Latina �Billboard Duets� que se transmitir� en vivo por TELEMUNDO el jueves 28 de abril a las 8pm/7c

El avance de Habla Men

Los prestigiosos Premios Billboard de la Música Latina tendrán lugar el jueves 30 de abril a las 7pm/6c por Telemundo

Artistas en los primeros Latin American Music Awards 8 de oct. en TELEMUNDO

Google Play announces the 10 indie games studios receiving a share of $2 million and hands-on support as a part of the Indie Games Fund 2024.

As Latino voters are a key voting bloc in the 2024 presidential election in battleground states like Nevada, Arizona and Pennsylvania, they have been targeted by a rise in Spanish-language misinformation. Most of the false messaging disparages Kamala Harris and supports Donald Trump, says Pulitzer Prize-winning journalist Maria Hinojosa, host of Latino USA, which investigated the phenomenon in a new episode called “The Misinformation Web.” She interviewed some of the content creators in this “blob” of online vitriol and says there is almost no effective content moderation online, nor many reliable fact-checking sources in Spanish to counter the lies.

In a recent study, researchers from Helmholtz Munich and Augsburg University Hospital demonstrated that nocturnal heat significantly raises the risk of stroke.

Reducing exposure to ads for unhealthy foods is important for improving diets and preventing medlinkchildhood obesity/medlink. The World Health Organization

Incredible platinum farming is one thing you're able to do all on your own without having to pay somebody else to do it for you. You just need a great Wow cataclysm release precious metal guidebook and also helpful pointers so...

E-commerce roll-up companies are big in the United States, and Wonder Brands wants to be that for Latin America.

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A tram was set on fire in Amsterdam as tensions escalate following violence targeting Israeli soccer fans. Police investigate the unrest.

A Samajwadi Party vehicle was seized for violating election norms during campaigning for Sumbul Rana in Meerapur. Investigation ongoing.

[S.l.] : ARC HUMANITIES PR, 2023.

New York ; Abingdon, Oxon : Routledge, 2005.

Swansea, Wales : Classical Press of Wales, 2004.

Albuquerque : University of New Mexico Press, 2017.

Mexico, D.F. : Bonilla Artigas editores, S.A. de C.V., 2015.

Cambridge, Mass. : Harvard University Press, 2012.

Lanham, MD : SR Books, an imprint of Rowman & Littlefield Publishers, 2005.