Forum topic

No AVX-512 support?

It seems that MKL fails to use AVX-512 ISA on my system:

OS: CentOS 7 with Kernel 4.10 CPU (from /proc/cpuinfo): Intel(R) Xeon Phi(TM) CPU 7250 @ 1.40GHz with 272 logic processors

Autor Martin K. Última actualización 30/03/2017 - 08:23
Forum topic

jit_gemm_convolution bwd data is too slow

Hi, I encountered a performance issue on jit_gemm_convolution, I have one convolution primitive whose input is: stride_w = 2 and jcp.t_pad = 3, so it can not go through avx512 or avx2 path, it go t

Autor Zhoulong J. (Intel) Última actualización 30/03/2017 - 01:51
Forum topic

Calling convention (codegen) bug when returning packed struct

There seems to be a bug related to a wrong assumption of calling convention of a function returning a packed struct. The generated function's code writes the full 5-byte struct to the RAX register but the calling code tries to pass a return address through the RCX register and then reads from the passed address on the stack (while overwriting the real result in RAX). When the returned struct...

Autor Andrey Glebov Última actualización 29/03/2017 - 23:08
Forum topic

Issue with O2/O3 optimisation using Intel compiler 2017 update 2


Autor Arthur P. Última actualización 29/03/2017 - 23:07
Forum topic

internal error: 010101_14277


Attached is a (preprocessed) source file that triggers the error.

Autor Matthias H. Última actualización 29/03/2017 - 23:06
Forum topic

omp_get_num_procs() doesn't returns all processor

Hi, I have an application in c++ that is using Qt libraries.

Autor Leonardo H. Última actualización 29/03/2017 - 22:58
Forum topic

__builtin_clrsbl undefined

__builtin_clrsb and __builtin_clrsbll exist, but __builtin_clrsbl seems to be missing.  Quick test:

Autor Evan N. Última actualización 29/03/2017 - 22:54
Forum topic

compatibility with GCC 5.x and later built-in functions

GCC 5.x and later support built-in functions for overflow checking [1]  that are unsupported by Intel C/C++ in versions including the recently released 2017.0.2.174 / 20170213.

Autor William S. Última actualización 29/03/2017 - 22:51
Forum topic

Apparent IPO compiler bug

I just encountered a very strange compiler (or linker?) bug, thought I should report it here. My description here is what I guess is happening... This is in icl Build 20150121

Autor Hans v. Última actualización 29/03/2017 - 22:47
Forum topic

C++ and Fortran linking


I'm trying to link C++ and fortran prorgam together, but I get the following error

/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o: In function `_start':

Autor marc b. Última actualización 29/03/2017 - 22:46
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