Are you using pbs to schedule the benchmark or are you using mpirun directly? Either way, I am guessing that script or command would be helpful.
Have you tried 1x16? Are you using the head node as a compute node as well? Just for our information, what version of oscar are you using? On 3/29/06, Olof Mattsson <[EMAIL PROTECTED]> wrote: > Hi! > > We're two network and systemadminstration students at the University of > Skövde, Sweden and we've built a OSCAR cluster and now we need to > benchmark it. We want to run HPCC Benchmark and we've compiled it with > lam and used ATLAS compiled on our system. The problem is it works great > on three nodes and four CPUs. As soon as we change hpccinf.txt to a > larger grid (PxQ) to use all 15 computing nodes (16 CPUs, 4x4) the > benchmark won't start. We have also tried with 2x4,1x8,2x3,3x3,3x4 but > nothing larger then 2x2 och 1x4 works for us. > The cluster consists of two dual AMD 2400+ with 2 GB RAM and one of > these is the masternode, the other is a computing node. Four AMD 1900+, > 1 GB RAM and ten AMD 1900+ with 512 MB RAM. The masternode as two nic's > and the private (eth1) is connected to a Summit4 and all nodes are > connected to that switch with fastethernet. > This is the hpccinf.txt that we uses when we try to run the benchmark on > 16 CPUs: > > HPLinpack benchmark input file > Innovative Computing Laboratory, University of Tennessee > HPL.out output file name (if any) > 6 device out (6=stdout,7=stderr,file) > 1 # of problems sizes (N) > 27476 Ns > 1 # of NBs > 64 NBs > 0 PMAP process mapping (0=Row-,1=Column-major) > 1 # of process grids (P x Q) > 4 Ps > 4 Qs > 16.0 threshold > 1 # of panel fact > 2 PFACTs (0=left, 1=Crout, 2=Right) > 1 # of recursive stopping criterium > 8 NBMINs (>= 1) > 1 # of panels in recursion > 2 NDIVs > 1 # of recursive panel fact. > 1 RFACTs (0=left, 1=Crout, 2=Right) > 1 # of broadcast > 1 BCASTs (0=1rg,1=1rM,2=2rg,3=2rM,4=Lng,5=LnM) > 1 # of lookahead depth > 1 DEPTHs (>=0) > 2 SWAP (0=bin-exch,1=long,2=mix) > 64 swapping threshold > 0 L1 in (0=transposed,1=no-transposed) form > 0 U in (0=transposed,1=no-transposed) form > 1 Equilibration (0=no,1=yes) > 8 memory alignment in double (> 0) > ##### This line (no. 32) is ignored (it serves as a separator). ###### > 0 Number of additional problem sizes for > PTRANS > 1200 10000 30000 values of N > 0 number of additional blocking sizes for > PTRANS > 40 9 8 13 13 20 16 32 64 values of NB > > The N value is sqrt(.75*15*536870912/8) since we want to use 15 nodes > and the least avalible RAM at any node is 512 MB > > Any help or ideas would be greatly apriciated! > > Regards > Olof Mattsson > > > > ------------------------------------------------------- > This SF.Net email is sponsored by xPML, a groundbreaking scripting language > that extends applications into web and mobile media. Attend the live webcast > and join the prime developer group breaking into this new coding territory! > http://sel.as-us.falkag.net/sel?cmdlnk&kid0944&bid$1720&dat1642 > _______________________________________________ > Oscar-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/oscar-users > ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642 _______________________________________________ Oscar-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/oscar-users
