I have tried to use Jumbo with the tg3 driver on Scientific Linux 5.0 (both the original 2.6.18-8.1.3.el5 and then 2.6.18-8.1.15.el5)
- netperf shows a sizeable CPU decrease (mainly due to softirq) and high bandwidths (above 100MB/s) - A LAM/MPI application hangs (it works fine on 1500 and IB) - NFS hangs BTW, there is a string of NFS write problems with these RH-based releases: 2.6.18-8.1.15.el5: writes at 2MB/s (SL 5.0, updated kernel) 2.6.18-92.el5: writes at 2MB/s (CentOS 5.2) 2.6.18-92.1.18.el5: writes at 30MB/s (CentOS 5.2, updated kernel) What's going on in the "upstream vendor"?! Best Regards, paulo > Couple of follow-up notes. > > MTU=4500: Had one node fall over with the same overflow errors. > MTU=3000: A WRF model is running, but single timesteps are executing > 2.5x slower than MTU=1500 > > I'll go snag the new driver and compile it. After all: What can it hurt! > > Thanks, Guy! > > Regards, Gerry > > Guy Coates wrote: >> Hi, >> >> We have also seen problems with the bnx2 drivers. >> >> I got a more recent set of bnx2 drivers from Broadcom: >> >> bnx2-1.8.2b (1Gig E cards) >> bnx2x-1.46.12 (10 Gig E cards) >> >> you can grab a copy from >> >> ftp://ftp.sanger.ac.uk/pub/gmpc/bnx2x_1.46.12.orig.tar.gz >> >> You should be able to build that drivers against kernel >= 2.6.9 so long >> as you >> have the appropriate kernel headers. >> >> Cheers, >> >> Guy >> > > -- > Gerry Creager -- gerry.crea...@tamu.edu > Texas Mesonet -- AATLT, Texas A&M University > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > -- Paulo Afonso Lopes | Tel: +351- 21 294 8536 Departamento de Informática | 294 8300 ext.10763 Faculdade de Ciências e Tecnologia | Fax: +351- 21 294 8541 Universidade Nova de Lisboa | e-mail: p...@di.fct.unl.pt 2829-516 Caparica, PORTUGAL _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
