- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello,
I would like to measure memory bandwidth and LLC hit rate on X7500 processor. "How do I Mesure Memory Bandwidth on an Intel Corei7 or Xeon 5500 Series Platform Using Intel Vtune Performance Analyzer?" is very usefull. So, I have two questions.
1) X7500 doesn't have "UNC_IMC_WRITES.FULL.ANY" or "UNC_IMC_NORMAL_READS.any" either.
Which events should I use insted of them?
2) Could you recommend some documents for measurement of cache hit rate on X7500 processors?
best regards,
Akiko MATSUMOTO
I would like to measure memory bandwidth and LLC hit rate on X7500 processor. "How do I Mesure Memory Bandwidth on an Intel Corei7 or Xeon 5500 Series Platform Using Intel Vtune Performance Analyzer?" is very usefull. So, I have two questions.
1) X7500 doesn't have "UNC_IMC_WRITES.FULL.ANY" or "UNC_IMC_NORMAL_READS.any" either.
Which events should I use insted of them?
2) Could you recommend some documents for measurement of cache hit rate on X7500 processors?
best regards,
Akiko MATSUMOTO
Link Copied
2 Replies
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
I have no boxwhich containsX7500 processor to verify, so no idea for Q1
For Q2, measuring LLC hit rate for Intel Core i7 processors I suggest to use:
LLC hit rate = (MEM_LOAD_RETIRED.LLC_UNSHARED_HIT * 35) / (CPU_CLK_UNHALTED.THREAD * 100)
There is a helper file named pmm.chm under "VTune/Help" directoryto know all events for i7 processors.
Also you can read this article about using VTune Performance Analyzer to optimize software on Intel Core i7 processors, to know more.
Regards, Peter
For Q2, measuring LLC hit rate for Intel Core i7 processors I suggest to use:
LLC hit rate = (MEM_LOAD_RETIRED.LLC_UNSHARED_HIT * 35) / (CPU_CLK_UNHALTED.THREAD * 100)
There is a helper file named pmm.chm under "VTune/Help" directoryto know all events for i7 processors.
Also you can read this article about using VTune Performance Analyzer to optimize software on Intel Core i7 processors, to know more.
Regards, Peter
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello Peter-san.
Thank you for your reply.
The value of 35 means the access latency bringing data from memory. Is that correct?
best regards,
Akiko MATSUMOTO
Thank you for your reply.
The value of 35 means the access latency bringing data from memory. Is that correct?
best regards,
Akiko MATSUMOTO
![](/skins/images/7FC17B7B85029576C25F1E43CE255B51/responsive_peak/images/icon_anonymous_message.png)
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