Version:           3.7.0 (using Devel) 
OS:                Linux

Using Memcheck (valgrind-3.7.0) as below on a Cray XK6 where the computing nodes are AMD Opteron(TM) Processor 6272:

export OMP_NUM_THREADS=16

aprun valgrind --suppressions=./src/fast.supp --gen-suppressions=all --leak-check=full --show-reachable=yes ./my_exec  {its arguments}

Dies with the following error:
vex amd64->IR: unhandled instruction bytes: 0xC5 0xF0 0x57 0xC9 0x66 0xF 0x2F 0xC8

This happens inside a dscal_ BLAS routine as provided by Intel MKL (sequential).


Reproducible: Always

Steps to Reproduce:
Happens in a scientific application compiled with icc 12.0.3 and using for BLAS the Intel MKL (version coming with the compiler) library. MKL used is the sequential version.

Actual Results:  
Memcheck crashes at the first call to dscal_ BLAS routine.

Expected Results:  
The complete check of the application.

On this machine I have no choice than to run it under the Cray aprun dispatcher.
Anyway, if could be helpful to look at the executable (statically linked) take the file valgrind.tgz from ftp.cscs.ch/out/mvalle
Please let me know when you downloaded it so I can delete it.