[Rcpp-devel] Question on performance and strategy

[Ralf Stubner]

On 9/22/18 8:41 PM, Jordi Molins wrote:
> I have access to a machine (not a desktop) with quite a few CPUs and
> quite a few GPUs. So, if for example there are 100 CPU cores and 100,000
> GPU cores, I guess that I could do a foreach for these 100 CPU cores for
> an R function, and then if this R function calls RcppArrayFire,
> RcppArrayFire could call 1,000 GPU cores for each call, to make the
> whole 100,000 GPU cores, no? Or is everything more complex than that?
ArrayFire can make use of multiple GPUs [1]. I do not know if it is able
to treat them as one unit. I would expect that one has to do this more
explicitly, e.g. using an explicit loop and setting the device to be
used like here https://github.com/arrayfire/arrayfire-python/issues/165.

However, all this is not related to Rcpp.

Greetings
Ralf

[1] c.f. http://arrayfire.org/docs/group__device__mat.htm

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Ralf Stubner
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