Re: [Pocl-devel] Multithreading support commited

[Erik S. <esc...@pe...>]

There is "hwloc", distributed on <http://www.open-mpi.org/>. This
library determines the number of logical CPUs, as well as their
association with various cache levels and NUMA properties.

-erik

2011/10/30 Pekka Jääskeläinen <pek...@tu...>:
> On 10/25/2011 07:01 PM, Carlos Sánchez de La Lama wrote:
>> I just commited rev. 45 with a multithreading device, similar to native
>> but creates a thread for each workgroup.
>
> I committed a modification to the multithreading code on Friday.
>
> Now it creates a "sensible number" of threads for the multicore
> instead of blindly creating as many threads as there are WGs.
>
> However, parsing the /proc/cpuinfo to produce the number of hardware
> threads available in the processor is a bit flaky so (if you run
> Linux) please test that it returns a sensible number of threads for
> you by enabling the #define DEBUG_MAX_THREAD_COUNT in pthread.c and
> compiling+running one of the examples. It should print out the "max
> thread count" for your (multi)processor before running the kernel. For
> Mac (and Windows) we need to figure out some other way to get the
> hardware thread count which defaults to 8 now.
>
> --
> --Pekka
>
>
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-- 
Erik Schnetter <esc...@pe...>
http://www.cct.lsu.edu/~eschnett/
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