- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
We have a customer who is trying to use a single compiler suite across platforms, but the intel compiler is giving slower performance than the pgi compiler on the AMD processor. The current options used for the compiler are
O3 -g -xHost -fno-fnalias -fno-alias -sox -traceback -complex-limited-range
Is there a better set of generic options that should be used for the latest AMD processor?
I have checked the knowledge base and I could have missed a thread here, but none of these seem to address this issue very much. Any information is appreciated.
O3 -g -xHost -fno-fnalias -fno-alias -sox -traceback -complex-limited-range
Is there a better set of generic options that should be used for the latest AMD processor?
I have checked the knowledge base and I could have missed a thread here, but none of these seem to address this issue very much. Any information is appreciated.
Link Copied
3 Replies
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Quoting - draceswbell.net
O3 -g -xHost -fno-fnalias -fno-alias -sox -traceback -complex-limited-range
Is there a better set of generic options that should be used for the latest AMD processor?
Is there a better set of generic options that should be used for the latest AMD processor?
Also is it possible to send a testcase?
Thank you,
Jennifer
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Quoting - draceswbell.net
O3 -g -xHost -fno-fnalias -fno-alias -sox -traceback -complex-limited-range
If your code depends for performance or accuracy on performing operations in order specified by parentheses, you may find better results by adding -fp-model source .
The optimization performed by icc is more effective on barcelona and newer AMD CPUs; there is no choice specifically for older CPUs.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Quoting - draceswbell.net
We have a customer who is trying to use a single compiler suite across platforms, but the intel compiler is giving slower performance than the pgi compiler on the AMD processor. The current options used for the compiler are
O3 -g -xHost -fno-fnalias -fno-alias -sox -traceback -complex-limited-range
Is there a better set of generic options that should be used for the latest AMD processor?
I have checked the knowledge base and I could have missed a thread here, but none of these seem to address this issue very much. Any information is appreciated.
O3 -g -xHost -fno-fnalias -fno-alias -sox -traceback -complex-limited-range
Is there a better set of generic options that should be used for the latest AMD processor?
I have checked the knowledge base and I could have missed a thread here, but none of these seem to address this issue very much. Any information is appreciated.
Thanks. This is in line with the option tests we tried. We will try to get a test case that shows the difference in performance, but this is proprietary code that is very large so it will take a while to reduce this to a small test case.
Reply
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page