On Tue, Apr 03, 2007 at 03:50:27PM -0700, David Schwartz wrote: > > > I write scientific number-crunching codes which deal with large > > input and output files (Gb, tens of Gb, as much as hundreds of > > Gygabytes on occasions). Now there are these multi-core setups > > like Intel Core 2 Duo becoming available at a low cost. Disk I/O > > is one of the biggest bottlenecks. I would very much like to put > > to use the multiple processors to read or write in parallel > > (probably using OMP directives in a C program). > > How do you think more processors is going to help? Disk I/O doesn't take > much processor. It's hard to imagine a realistic disk I/O application that > was somehow limited by available CPU. Indeed. S/he is mistaking CPUs for DMA engines. The way you make this go fast is a lot of disk controllers running parallel. A single CPU can handle a boatload of interrupts. -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
