New OpenCL back-end in CAPS HMPP 2.3 hybrid compiler

June 6th, 2010

CAPS has recently added an OpenCL code generator to the just released 2.3 version of its HMPP directive-based hybrid compiler. Also, the CUDA back-end generator has been enhanced with Fermi capabilities and this new release brings support for more native compilers with Intel ifort/icc, GNU gcc/gfortran and PGI pgcc/pgfort compilers, enabling developers to freely use their favorite compiler with HMPP 2.3.

Based on GPU programming and tuning directives, HMPP offers an incremental programming model that allows developers with different levels of expertise to fully exploit GPU hardware accelerators in their legacy code. Read the rest of this entry »

GPGPU Wrapper for R Statistical Computing Environment

June 2nd, 2010

Jaideep Singh and Ipseeta Aruni present a GPGPU wrapper for the R statistical computing environment at the R user conference 2010. Their approach is to overload datatypes using R’s simplified wrapper and the SWIG Interface Generator functionality. A full page summary of the approach is available at the conference web site (PDF link).

Mellanox and NVIDIA introduce GPUDirect Technology

June 2nd, 2010

Mellanox and NVIDIA have teamed up to create a solution that enables data sharing (without expensive memory copies) between CUDA-managed host memory and Mellanox Infiniband cards. NVIDIA GPUDirect technology allows application and middleware developers to improve performance by up to 30%, by providing a shared, RDMA-accessible address space between the GPU and the interconnect.

The full press release is available here.

Intel Releases Knights Corner

June 2nd, 2010

At ISC’10, Intel demonstrated their co-processor approach to HPC (formerly known as Larrabee, now codenamed Knights Corner). A prototype of the Intel Many Integrated Core (MIC) architecture with 32 in-order cores, each equipped with a 512-wide vector unit and connected via an on-chip coherent cache, delivered more than half a Teraflop performance for LU decomposition in a live demonstration during a keynote by Kirk Skaugen.

The full press release from ISC’10 is available here.

Australia GPU Users Groups

June 1st, 2010

The Australia GPU Users groups are informal special interest groups founded to bring together GPU users from all fields and experience levels to learn and share their ideas and creations at friendly meetings.  There are currently GPU users groups forming in Brisbane, Sydney, and Perth.

The groups will discuss general GPU computing, including GPGPU, CUDA, OpenCL, DirectCompute, DirectX and OpenGL and related technologies. There will be short presentations during the meetings, as well as informal discussions on a range of subjects, including core fundamentals, hardware architectures, parallel programming as well as specific optimisations and also examples of applications from different fields of industry, science and multimedia.

Sign up today: the meetings will allow you to meet others who share your interest in GPUs. is maintaining a list of GPU Users groups.  If you have a local GPU users group, please tell us about it!

New NVIDIA Research & Certification Progams for CUDA/GPGPU

June 1st, 2010

At the ISC 2010 conference in Hamburg, Germany, this week, NVIDIA announced new programs for the growing CUDA/GPGPU developer community:

  • CUDA Certification Program – Driven by demand for qualified GPGPU engineers, this is the first program to certify expertise in massively parallel programming on GPUs.
  • CUDA Research Centers – Recognizes institutions that embrace GPU Computing across multiple research fields.
  • CUDA Teaching Centers – Recognizes institutions that have integrated GPU Computing techniques into their mainstream computer programming curriculum.

These programs complement the existing CUDA Center of Excellence program, which has recognized 10 premier institutions around the world. More details are available here:

Introductory Tutorial to OpenCL™ for HPC at SAAHPC’10

May 30th, 2010

AMD is offering an introductory tutorial to OpenCL™ that will be held alongside the 2010 Symposium on Application Accelerators in High Performance Computing (SAAHPC’10). The tutorial is a “programmer’s introduction” which covers the ideas behind OpenCL™ and their translation to source code. Read the rest of this entry »

ATI Stream Profiler v1.3 Released

May 20th, 2010

Advanced Micro Devices (AMD) recently released ATI Stream Profiler version 1.3. ATI Stream Profiler is a Microsoft® Visual Studio® integrated runtime profiler that gathers performance data from the GPU as your OpenCL™ application runs. This information can then be used by developers to discover where the bottlenecks are in their OpenCL™ application and find ways to optimize their application’s performance.

Features of the tool include:

  • Measure the execution time of an OpenCL kernel
  • Query the hardware performance counters on ATI Radeon graphics cards
  • Display the memory traffic from and to GPU
  • Compare multiple runs (sessions) of the same or different programs
  • Store the profile data for each run in a csv file
  • Display the IL and ISA (hardware disassembly) code of the OpenCL kernel

HOOMD-blue 0.9.0 released

May 20th, 2010

HOOMD-blue stands for Highly Optimized Object-oriented Many-particle Dynamics — Blue Edition. It performs general-purpose particle dynamics simulations on a single workstation, taking advantage of  NVIDIA GPUs to attain a level of performance equivalent to dozens of processor cores on a fast cluster.

HOOMD-blue 0.9.0 is a major new release. Highlights include:

  • Support for Fermi generation GPUs
  • Performance enhancements
  • New pair potentials
  • Particle data is now accessible from hoomd scripts
  • Binary format dump files for simulation restarts
  • Numerous small enhancements to enable easily restartable jobs
  • 2D simulations are now possible
  • Integration methods can now be applied to specified groups of particles
  • All IMD commands issued by VMD are now understood
  • and more

HOOMD-blue 0.9.0 is available for download under an open source license.

Scalable HeterOgeneous Computing (SHOC) Benchmark Suite

May 4th, 2010

The Scalable Heterogeneous Computing Benchmark Suite (SHOC) is a collection of benchmark programs testing the performance and stability of systems using computing devices with non-traditional architectures for general-purpose computing, and the software used to program them. Its initial focus is on systems containing Graphics Processing Units (GPUs) and multi-core processors, and on the OpenCL programming standard. It can be used on clusters as well as individual hosts.

(Danalis, A., Marin, G., McCurdy, C., Meredith, J., Roth, P., Spafford, K., Tipparaju, V., Vetter, J. (2010). The Scalable HeterOgeneous Computing (SHOC) Benchmark Suite.Proceedings of the Third Workshop on General-Purpose Computation on Graphics Processors (GPGPU 2010)PDF. Mar 2010.)

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