Hi, If certain instructions are not detected through configure process, does that imply that a valgrind build will not be configured to handle these instructions (i.e. fail at runtime)?
I have a system where my host nodes are somewhat different from my target nodes (where the valgrind package will run) and I'm running into unhandled instructions when running applications. I don't know if these instructions are not supported because configure doesn't detect them during configure, or if they truly are not - implemented? Certain instructions that are not detected are AVX2 and BMI1/2, BUT, I'm not sure if these are the culprits of unhandled instructions. I think I saw a patch committed that handles these instructions. checking if x86/amd64 assembler speaks AVX2... no checking if x86/amd64 assembler speaks BMI1 and BMI2... no I'm positive that my target node has them (AMD bulldozer/piledriver). But again, if I try to compile the code snippets generated during ./configure process it exits with the same error. So this leaves me even more confused: is this a compiler/assembler issue (am I missing a flag?), or an architecture issue. Moreover, I don't really know which instructions are causing it to fail, how do I check? The line I get is: 21 vex amd64->IR: unhandled instruction bytes: 0xC4 0xE3 0xF1 0x6B 0x15 0x12 0x4 0x0 22 vex amd64->IR: REX=0 REX.W=1 REX.R=0 REX.X=0 REX.B=0 23 vex amd64->IR: VEX=1 VEX.L=0 VEX.nVVVV=0x1 ESC=0F3A 24 vex amd64->IR: PFX.66=1 PFX.F2=0 PFX.F3=0 25 3=0 Can anyone clarify? P.S. If you need more clarification regarding my system/compiler/os let me know. For what it's worth, it's a cray system composed of bulldozer/piledriver CPUs, and the OS is cray CNL. -- View this message in context: http://valgrind.10908.n7.nabble.com/question-on-valgrind-s-configure-and-build-process-tp46406.html Sent from the Valgrind - Users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
