2 ms·
"With 1 TB RAM per AMD Epyc CPU, it would take over 5 seconds just to memset the whole memory at peak 200 GB/s speed." Makes sense, though I was still surprise
by tyingq 5y ago
"With 1 TB RAM per AMD Epyc CPU, it would take over 5 seconds just to memset the whole memory at peak 200 GB/s speed."
Makes sense, though I was still surprised to read memset() potentially taking 5 seconds.
- ashvardanian 5y agoHaha, those numbers are outrageous) We are now streaming about 50 GB/s from our persistent storage on each machine. At those rates even a single memcpy will be noticeable, so we are forced to disable OS page caching and often bypass the Linux kernel via SPDK. On next gen hardware it will be even more fun!