topic You're probably better off in Intel® oneAPI Math Kernel Library

minimum value element of a distributed vector

stansy — Sat, 13 Oct 2012 10:47:03 GMT

Hi,

How to compute minimum absolute value(s) element or index of a distributed vector(s). Is there a function similar to p? amax?

Thanks,

Stan

You're probably better off

TimP — Sat, 13 Oct 2012 12:29:07 GMT

You're probably better off writing this in the language of your choice. Even for the uniform strided cases which are covered by ?amax you are likely to get better results with any modern compiler, with the possible exception of Microsoft's.

Does this mean that you do

stansy — Sat, 13 Oct 2012 13:16:57 GMT

Does this mean that you do not recommend the use of the Intel C + + Composer for Windows? I am surprised why PBLAS does not have a function for calculating the minimum of a distr vector so I asked.

Intel C++ certainly qualifies

TimP — Sat, 13 Oct 2012 14:13:24 GMT

Intel C++ certainly qualifies as a modern auto-vectorizing compiler, and should do a good job with a reasonable source code implementation. Level 1 BLAS functions aren't particularly good candidates for PBLAS, so I'm not surprised the developers extended only a small group of them, and didn't add capabilities. Evidently, if ?amax fits your definition of "distributed," and your problem is large enough, you might be interested in PBLAS.

stansy,

Todd_R_Intel — Mon, 15 Oct 2012 22:29:13 GMT

stansy, p?amax and i?amax are part of PBLAS and BLAS, but p?amin and i?amin are not part of the standard PBLAS and BLAS (though we added i?amin to Intel MKL when a customer requested it quite a while back). Todd

Thank you very much for the

stansy — Tue, 16 Oct 2012 07:35:30 GMT

Thank you very much for the comprehensive answer to my question. Stan