search for: spus

Hi, I am a newbie to R, just trying to switch from Splus. I am wondering to know if there is any such command in R as "attach" in Splus which can be used to attach the full directory. Also, any idea/referrence about, how to load c functions in R would be highly appreciated. Thanks, Utsav

...third (I'm a glutton for punishment.) This year, the focus will be on many/multicore's programmability gap -- the gap between today's languages and the multicore/manycore architectures that we're trying to program. A stellar example is software development on the IBM Cell BE and its SPUs in C/C++. The workshop will focus on languages, compilers and runtimes that are targeted for many/multicore architecutes and platforms. If you know of any good speakers with topics in the workshop's area, please feel free to contact me. -scooter

I just ran across something interesting: DAGCombine inserts a 64-bit constant as the result of converting a (bitconvert (fabs val)) to a (and (bitconvert val), i64const). The problem: i64 constants have to be legalized for the CellSPU platform. DAGCombine is doing the right thing but it's not doing the right thing for CellSPU and it's damed difficult to work around this

...ted to see if there was any interest in something like this for mainline before writing up something more detailed. Here are a few supporting details for now: * Several existing machines don't provide loads and stores for every power-of-2-sized datatype down to i8. For example, Cell's SPUs only support 16-byte, 16-byte-aligned memory ops (this restriction is found for other SIMD processors as well), and some GPUs don't support i8 or i16 loads/stores. * Even when short memory operations are possible, sometimes they are implemented in a very conservative way (e.g., trapping to...

I just about have my PV block device drivers booting, except just before the login screen appears I get a message that the registry couldn''t be written out. I''m pretty sure that this is because some data from the int13 interface provided by the qemu intel ide driver that has been written, hasn''t actually made it to the block device (lvm volume in my case). I''ve