Just Testing

Lambda Science
About Me

I research and teach programming languages, compilers, and their applications at the University of New South Wales (UNSW), Sydney. My main interest is in functional and parallel programming, and in particular, in Haskell.


My Twitter handle is TacticalGrace.
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Archive for

September 2009

 

NVIDIA’s next generation GPU architecture has a lot for HPC to love

Yesterday, NVIDIA presented its next-generation GPU architecture, called "Fermi": http://insidehpc.com/2009/09/30/nvidia-next-generation-gpu-fermi-targets-hpc-...

In addition to more raw computing power, Fermi brings advances that make it even more interesting for general-purpose computations than the current NVIDIA GPUs. In particular, it seems to support function pointers —at least they claim support for virtual functions— and improved support for double-precision floating-point numbers as well as coarse-grained MIMD support in the form of "concurrent kernel execution".

Filed under  //  accelerate   fermi   gpgpu  
Posted
 

Heads Up: GHC devs on Macs - GHC's testsuite crashes spotlight indexer on SL

GHC's testsuite[1] contains a test encoding001 (in the I/O library section) that generates files in various unicode encodings including one using UTF-8 with byte order markers, namely encoding001.utf16.utf8_bom. On Mac OS X 10.6 (Snow Leopard), this file causes the indexing process of Spotlight to hang. More precisely, the mds (meta dataserver) process appears to go into a loop (eating all cycles of one processor core) — it appears to hang in the library libmecap trying to parse what it probably believes to be Japanese or Chinese text.

Interestingly, the file command regards the file to be "Unicode text, UTF-32, big-endian".

Filed under  //  ghc   haskell   mac  
Posted
 

Haskell Bindings to C – c2hs

TomMD posted a nice introduction to using the interface generator C->Haskell

http://tommd.wordpress.com/2009/09/22/haskell-bindings-to-c-c2hs/

Filed under  //  c2hs   haskell  
Posted
 

Language Specification for Blocks

Here is the language specification for blocks (that is lambda abstractions) for C, Objective-C & C++ as implemented in the Clang compiler and used in Mac OS X 10.6 (Snow Leopard):

   http://clang.llvm.org/docs/BlockLanguageSpec.txt

Filed under  //  cocoa   mac   objc  
Posted
 

Implementing Data Parallel Haskell

Here is a video of Roman Leshchinskiy's talk on our work on implementing Data Parallel Haskell (DPH), which he presented at the Haskell Implementors' Workshop (co-located with ICFP'09):

 

Filed under  //  dph   haskell   multicore   parallelism  
Posted
 

Running Haskell Array Computations on a GPU

Video of my talk at the Haskell Implementors' Workshop: 

The slides are available from a previous post: http://justtesting.posterous.com/haskell-arrays-accelerated-0

Filed under  //  edsl   gpgpu   haskell   parallelism  
Posted
 

Grand Central Dispatch aka libdispatch is now Open Source

Apple released the source code of one of the core technologies in Snow Leopard: http://libdispatch.macosforge.org/
 
This is an interesting move, as discussed at http://www.macresearch.org/grand-central-now-open-all — it will be very interesting to see whether this will lead to a wider adoption of Grand Central Dispatch beyond Mac OS.

Filed under  //  concurrency   mac   parallelism  
Posted
 

Haskell Arrays, Accelerated

The slides from my talk Haskell Arrays, Accelerated (Using GPUs) at the Haskell Implementors’ Workshop (that was co-located with ICFP 2009 in Edinburgh) are now available. The talk introduces a novel framework, based on an embedded domain-specific language of multi-dimensional array computations, targeting GPUs and other acceleration hardware.

Haskell Arrays Accelerated with GPUs

Filed under  //  edsl   gpgpu   haskell   parallelism  
Posted