Hello Dr. Satish, I am still bit confused in taking decesion and wanting some more guidence from you and PETSc users/maint.
*Question ONE:* Please help me in selecting out one of the following two clusters, *bit updated/changed from my previous choices.* As I am going to make a gigabit ethernet cluster of 4 compute nodes (totaling 8 cores), with each node having: (Choice 1) One Processor: Intel Core2Duo E6750 2.66GHz, FSB 1333MHz, 4MB L2. Motherboard: Intel Desktop Board DX38BT with Intel X38 Chipset supporting 1333/1066/800 MHz system bus. RAM: 2GB DDR3 1333MHz ECC System Memory. (Choice 2) One Processor: Intel Xeon 3075 2.66GHz, FSB1333, 4MBL2. Motherboard: Intel Entry Server Board Intel S3200SHV with intel 3200 Chipset supporting 1333/1066/800 MHz system bus. RAM: 2GB DDR2 800MHz ECC System Memory. Which one system has larger memory-bandwidth/CPU-core? Better for PETSc? Any other comment/remark? My area work deals in sparse matrices. I near future I would like to add 12 similar compute nodes in the cluster. So my decision should be optimum/long-lasting. *Question TWO:* I want to make ROCKS V cluster on Intel x86_64 machines (selected from the above options). ROCKS V is available separately for both i386 and x86_64 machines. But I have not seen two different version of PETSc for i386 and x86_64 machines. Is there only a single version for PETSc for both i386 and x86_64 machines? IF YES, then out of "ROCKS/OS i386" and "ROCKS/OS x86_64" which one is more suitable (efficiecy/speed/performance wise) for PETSc? Regards, Amjad Ali. On Tue, Apr 22, 2008 at 8:25 PM, Satish Balay <petsc-maint at mcs.anl.gov> wrote: > On Tue, 22 Apr 2008, amjad ali wrote: > > > Hello, > > > > Please help me out in selecting any one choice of the following: > > (Currently I am making a gigabit ethernet cluster of 4 compute nodes > > (totaling 8 cores), with each node having) > > > > (Choice 1) > > One Processor: Intel Core2Duo E6750 2.66 GHz Processor, FSB 1333MHz, 4MB > L2. > > Motherboard: Intel Entry Server Board Intel S3200SHV with intel 3200 > Chipset > > supporting 1333/1066/800 MHz FSB . > > RAM: 2GB DDR2 800MHz ECC System Memory. > > > > (Choice 2) > > One Processor: Intel Xeon 3075 2.66 GHz FSB1333 4MBL2. > > Motherboard: Intel Entry Server Board Intel S3200SHV with intel 3200 > > Chipset supporting 1333/1066/800 MHz FSB . > > RAM: 2GB DDR2 800MHz ECC System Memory. > > > > Which one system has larger memory-bandwidth/CPU-core? > > Any other comment/remark? > > My area work deals in sparse matrices. > > I near future I would like to add 12 similar compute nodes in the > cluster. > > Based on the above numbers - the memory bandwidth numbers should be > the same. And I expect the performance to be the same in both cases. > > Ideally you would have access to both machines [perhaps from the > vendor] - and run streams benchmark on each - to see if there is any > difference. > > Satish > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20080502/bf6c7500/attachment.htm>
