Hi all, Just came across this on the Easybuild Slack.
https://code.facebook.com/posts/605721433136474/accelerate-large-scale-applications-with-bolt/ # Highly complex services, such as those here at Facebook, have large source # code bases in order to deliver a wide range of features and functionality. # Even after the machine code for one of these services is compiled, it can # range from 10s to 100s of megabytes in size, which is often too large to # fit in any modern CPU instruction cache. As a result, the hardware spends a # considerable amount of processing time - nearly 30 percent, in many cases - # getting an instruction stream from memory to the CPU. To address this # issue, which is commonly known as instruction starvation, we have developed # and deployed BOLT, a binary optimization and layout tool. BOLT optimizes # placement of instructions in memory, thereby reducing CPU execution time by # 2 percent to 15 percent. Unlike previous tools to address instruction # starvation, BOLT works with applications built by any compiler, including # GCC or Clang. It uses "perf record" to gather its profiling information (so you don't need to compile it with profiling libs) and if you add --emit-relocs to your link flags it can do function reordering too. More information (and the code) on Github: https://github.com/facebookincubator/BOLT Have fun! Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
