> [email protected] wrote: >>>> Next caliper allows to get a lot of diagnostics from the cpu (also >>>> because >>>> ia64 supports all that while x86-64 does not AFAICT) like number of >>>> bubbles >>>> in the pipeline, L2-cache misses, clock-cycles per line of C-code etc. >>> these are just the performance-counting MSR's, which are available >>> on Opterons as well as Xeons too. >> >> Even back to the PIII processors (and more?). Check out PAPI >> (http://icl.cs.utk.edu/papi/) for more details but, as an example, here >> is >> the output from an old cluster node: > > Oops. Well actually great to hear. Which profilers can benefit from all > this info?
This monster suite (free!): http://www.cs.uoregon.edu/research/tau/docs.php Which I have been pushing around for a while and it's quite impressive IMHO. Weird thing is I seem to be the only one interested in profiling and metrics and all that gunk around here. Guess that will change now that it is actually possible to _measure_ the FLOPS your application _truely_ consumes thanks to these counters (I mean, for us laymans that never had access to such cool hardware :P ) > > toon > Eric _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
