If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
disabling hardware data prefetch
Does anyone know how to disable hardware data prefetch on the Athlon64
architecture? I want to turn this feature off because I want to use software prefetching instructions to load cache lines from memory and I don't want the hardware prefetcher interfering with my software prefetch schedule. The Pentium and Xeon processors also have hardware prefetching and it can be disabled by zeroing a bit in a MSR (Model Specific Register). Specifically, it is bit 9 of MSR "IA32_MISC_ENABLE." The Athlon/Opteron docs don't show a corresponding MSR (I believe it is specific to Pentium/Xeon). And the AMD docs don't indicate any way of disabling hardware prefetch. Thanks, -- Steve |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
16mb buffer hard drive in a laptop | Dan Irwin | Storage (alternative) | 49 | November 4th 04 04:18 PM |
Please Help me choose momory for AMD64 | Synapse Syndrome | Asus Motherboards | 11 | August 26th 04 02:43 PM |
Network File Server | Bob | Storage (alternative) | 37 | May 4th 04 09:07 PM |
help with motherboard choice | S.Boardman | General | 30 | October 20th 03 10:23 PM |
parhelia w/ 3 monitors | tony wong | Matrox Videocards | 16 | September 12th 03 03:59 AM |