Hi, We're having problems trying to run an application under an smp kernel. Here's our system: dual PII 300 MHz 256 mb ram asus p2b-ds motherboard on-board adaptec aic-7890 scsi 4.5 gb ide hard disk 4.5 gb scsi hard disk ncr53c810 scsi card (pci) 4 mm dds-2 tape drive 32x ide cd-rom matrox 8 mb millenium II video ps/2 mouse Red Hat 5.1 kernel 2.0.36 We're trying to run a particular fpu-intensive critical application. The problem is that under an smp kernel, if multiple processes of this application are running simultaneously, one or more of the processes will crash so that eventually, only one of the processes will run to completion. I haven't been keeping track of this from when we first realized this problem, but during the last couple days, it seems like the first submitted process is the one that survives and runs to completion. All of the other processes will crash with a segmentation fault and a core dump. If I run multiple processes of this application under a up kernel, all processes will run fine to completion on the single processor. Also, under an smp kernel, I can run a single process of the particular application, and a different appplication simultaneously with no problem. You're probably thinking that there's something wrong with the application. But several of our colleagues are running this same application on their smp machines. Of course, their hardware isn't exactly the same as ours. I've checked smp documentation on the internet to see if we've got any hardware which is totally incompatible with smp, but everything seems to check out. We've tried various kernels including 2.0.35, 2.0.36, 2.1.125, and 2.2.0-pre6, all with the same problem. With all of the smp kernels we've compiled, 'cat /proc/cpuinfo' indicates both processors, and their specs look right. Is there some smp benchmark we can run that would indicate that the processors are actually running ok, instead of just telling you that they're there? We've also considered overheating, but we get this problem even with the case off. We've also never overclocked our processors. What else could we try? Thanks for any advice you can give us, Hidong _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com - Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/mentre/smp-faq/ To Unsubscribe: send "unsubscribe linux-smp" to [EMAIL PROTECTED]
