Personal computing discussed
Moderators: renee, Flying Fox, morphine
Well it looks like AMD is starting to roll out what alot have said are impossible . Story at the INQ here http://www.theinquirer.net/default.aspx?article=32790 there is also a link to the file
just brew it! wrote:At least what have been reported and speculated on. Although this R-HT thing may be completely different from what we imagined in the first place.I think that article is misleading. From the looks of it, this has absolutely nothing to do with R-HT.
Hance wrote:Well it looks like AMD is starting to roll out what alot have said are impossible . Story at the INQ here http://www.theinquirer.net/default.aspx?article=32790 there is also a link to the file
Flying Fox wrote:This looks like some timing tricks to make the OS think it is running real SMP instead of dual cores on the same die? May be Windows does not deal with dual cores properly still, with the real SMP scheduling still turning out to be a better algorithm?
just brew it! wrote:Bitvector has mentioned it before, may be with dual core (since Microsoft counts physical sockets with their logical processor concept in their APIs), it was using the SMT scheduling policies and that is not performing properly?Flying Fox wrote:This looks like some timing tricks to make the OS think it is running real SMP instead of dual cores on the same die? May be Windows does not deal with dual cores properly still, with the real SMP scheduling still turning out to be a better algorithm?
But for all intents and purposes, dual-core is "real SMP". Something doesn't make sense here.
Flying Fox wrote:At least what have been reported and speculated on. Although this R-HT thing may be completely different from what we imagined in the first place.
pureevilmatt wrote:This utility doesn't seem to be an enhancement at all, but rather 2 independent fixes. First, the /usepmtimer fix for apps experiencing audio stuttering in SMP/SMT setups, and then a fix for the games that have graphical stuttering because of the /usepmtimer fix. I don't see how this has anything at all to do with R-HT as speculated upon in the original inquirer article or the x-bit labs article.
Flying Fox wrote:Bitvector has mentioned it before, may be with dual core (since Microsoft counts physical sockets with their logical processor concept in their APIs), it was using the SMT scheduling policies and that is not performing properly?
Flying Fox wrote:just brew it! wrote:Bitvector has mentioned it before, may be with dual core (since Microsoft counts physical sockets with their logical processor concept in their APIs), it was using the SMT scheduling policies and that is not performing properly?But for all intents and purposes, dual-core is "real SMP". Something doesn't make sense here.
Glorious wrote:pureevilmatt wrote:This utility doesn't seem to be an enhancement at all, but rather 2 independent fixes. First, the /usepmtimer fix for apps experiencing audio stuttering in SMP/SMT setups, and then a fix for the games that have graphical stuttering because of the /usepmtimer fix. I don't see how this has anything at all to do with R-HT as speculated upon in the original inquirer article or the x-bit labs article.
NO. That can only affect what the windows API functions use for their timer and since this software explicitly states that it is "for those applications that bypass the Windows API for timing " that is obviously not what this utility does.
pureevilmatt wrote:The first thing this optimizer does when you install it, is add the /usepmtimer switch to boot.ini, changing what windows precision timer bases it's value on... so despite what the AMD page says, it's not just for apps that bypass the windows timer function by using the RDTSC instruction.
pureevilmatt wrote:The second thing it does is add a program to startup.
pureevilmatt wrote:Maybe a programmer can tell me wether or not the audio and video APIs of DirectX rely on the same timer function as windows itself?
Reverse Hypertransport does not exist
Flying Fox wrote:It's Fudo, what can you expect?
Now, so what is CMT from the Intel side then? Something like this dream, or just a cooling technique? I guess this should go another thread then.
Glorious wrote:shintai wrote:And CMT is already tested, same performance and such. But ofcause, thermal testing aint done.
and you have evidence of this?
Glorious wrote:maybe because:
1. Enabling it doesn't do anything unless it's actually used
2. That picture is inauthentic
3. The BIOS option doesn't actually set anything
or any number of reasons?
shintai wrote:Where do you think I got the Bios screenshot from