On Sun, 10 Nov 2002, khoa nguyen wrote: > > Hi users, > > Does anyone know what is the buffer size limit for MPICH > implementation ? and for LAM-MPI ??? Where do I suppose to find such > info. ? (I don't think I see it anywhere on manual). I'm doing some > experiments and it leads to a possibility of examining the buffer size > (either the effect of current size, or the need to extend the buffer > size). Please pin point me to the places to find those info. (both in > manual instruction and/or place in source code would be very helpful). > Best Regards, K.N. >
If you're asking about buffer settings at *compile* time for the *package* that have a significant impact on the derived performance, you're probably asking about Dave Turner and Suehua Chen's work at Ames Lab. They had a paper at CC`02 that describes their findings, "Protocol-Dependent Message-Passing Performance on Linux Clusters" which points out benefits of increasing the P4_SOCKBUFSIZE parameter from the default 32kB to 256kB, etc. and the impact of various parameters settings on MPICH's rendezvous mode. Paul Gray -o) 323 Wright Hall /\\ University of Northern Iowa _\_V Message void if penguin violated ... Don't mess with the penguin No one ever says "Hey, I can't read that ASCII e-mail ya sent me." ------------------------------------------------------- This sf.net email is sponsored by: To learn the basics of securing your web site with SSL, click here to get a FREE TRIAL of a Thawte Server Certificate: http://www.gothawte.com/rd522.html _______________________________________________ Oscar-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/oscar-users
