|
|
|
# TITAN
|
|
|
|
Is a tricky beast.
|
|
|
|
First its an AMD Interlagos based machine.
|
|
|
|
The key is there are only one floating point unit per two cores. So from a science perspective there are only 8 cores per node, not the sixteen listed. Additionally your code needs to bind to just one core per pair. See [Cray XK7 CPU info](https://www.olcf.ornl.gov/support/system-user-guides/titan-user-guide/#333) |
|
|
\ No newline at end of file |
|
|
|
## it is an AMD Interlagos based machine, like OIC phase 5.
|
|
|
|
The key is there are only one floating point unit per two cores. So from a science perspective there are only 8 cores per node, not the sixteen listed. Additionally your code needs to bind to just one core per pair. See [Cray XK7 CPU info](https://www.olcf.ornl.gov/support/system-user-guides/titan-user-guide/#333)
|
|
|
|
## mpimom processes run on service nodes (this complicates what PBS scripts can do)
|
|
|
|
## There is only one GPU per node, i.e. 16 CPU, 8 FPU, 1 GPU. It's generally on you to manage this.
|
|
|
|
|
|
|
|
If you are having trouble probably best to just contact @epd |
|
|
\ No newline at end of file |
