Results 1 to 25 of 111

Thread: TLB bug still present in B3 rev Phenoms

Hybrid View

  1. #1
    naokaji
    Guest
    Quote Originally Posted by happychappy View Post
    BTW, is AMD doing a K10 mobile chip?
    no roadmap showed any k10 mobile parts for the near future....

  2. #2
    Xtreme Member
    Join Date
    Dec 2006
    Location
    Edmonton,Alberta
    Posts
    182
    TLB...TLB...TLB....

    I've had two Phenom 9500's since Nov.26
    One crunching at stock speeds full load-> NO TLB CRASHES

    The other one been overclocked
    been running at 2772Mhz since Dec.27
    TLB fix disabled
    running games,benchies and crunching-> NO TLB CRASHES

    If I had TLB crashing I don't my Phenom would have made it to 32nd spot on Riesel Sieve Boinc for daily RAC in less then a week
    Computer ID 33998 owner Frank Encruncher
    http://boinc.rieselsieve.com/orig/to...=expavg_credit

    Does it matter if there is TLB bug on Phenom... Answer NO

  3. #3
    Xtreme Addict
    Join Date
    Jan 2005
    Posts
    1,366
    Quote Originally Posted by AMDDeathstar View Post
    TLB...TLB...TLB....

    I've had two Phenom 9500's since Nov.26
    One crunching at stock speeds full load-> NO TLB CRASHES

    The other one been overclocked
    been running at 2772Mhz since Dec.27
    TLB fix disabled
    running games,benchies and crunching-> NO TLB CRASHES

    If I had TLB crashing I don't my Phenom would have made it to 32nd spot on Riesel Sieve Boinc for daily RAC in less then a week
    Computer ID 33998 owner Frank Encruncher
    http://boinc.rieselsieve.com/orig/to...=expavg_credit

    Does it matter if there is TLB bug on Phenom... Answer NO
    The bug is very critical for servers.
    Here is the problem:
    http://www.x86-64.org/pipermail/disc...er/010281.html
    Here is the answer:
    http://www.x86-64.org/pipermail/disc...er/010282.html

  4. #4
    Xtreme Addict
    Join Date
    Sep 2007
    Location
    Munich, DE
    Posts
    1,401
    Quote Originally Posted by kl0012 View Post
    The bug is very critical for servers.
    Here is the problem:
    http://www.x86-64.org/pipermail/disc...er/010281.html
    Here is the answer:
    http://www.x86-64.org/pipermail/disc...er/010282.html
    Thank you for those links, this is the first time i see the bug in action.
    The guy who answerd is working for AMD according to his sig, so it seems to be no BS this time.

    I could not make the bug occure with xen and differen guest osses all running prime95 or other benchmarks.
    It would be interesting what software he ran.

  5. #5
    Xtreme Cruncher
    Join Date
    Aug 2006
    Location
    Denmark
    Posts
    7,747
    Quote Originally Posted by justapost View Post
    Thank you for those links, this is the first time i see the bug in action.
    The guy who answerd is working for AMD according to his sig, so it seems to be no BS this time.

    I could not make the bug occure with xen and differen guest osses all running prime95 or other benchmarks.
    It would be interesting what software he ran.
    It is not as easy as such. The guess is its due to hot spots. Thats also one reason it could be safe at under 2.4Ghz. So Its abit like OC and chips. Random picks. Maybe only 5% of all chips have this bug at stock speed. And with an increased chance with higher frequency.

    if it was a fixed bug so to say. I am pretty sure AMD would have caught it in their QA process.

    We have a few people here with 0 bugs, and we have an example of a person in WCG forum where it crashes.
    Crunching for Comrades and the Common good of the People.

  6. #6
    Xtreme Addict
    Join Date
    Sep 2007
    Location
    Munich, DE
    Posts
    1,401
    Quote Originally Posted by Shintai View Post
    It is not as easy as such. The guess is its due to hot spots. Thats also one reason it could be safe at under 2.4Ghz. So Its abit like OC and chips. Random picks. Maybe only 5% of all chips have this bug at stock speed. And with an increased chance with higher frequency.
    There is a detailed description of the TLB-thing at LostCircuit here.
    Quote Originally Posted by Shintai View Post
    if it was a fixed bug so to say. I am pretty sure AMD would have caught it in their QA process.
    I dont want to say the bug does not exist, but i experienced it is pretty hard to trigger it.
    Quote Originally Posted by Shintai View Post
    We have a few people here with 0 bugs, and we have an example of a person in WCG forum where it crashes.
    Thx, gona try to trigger the bug with WCG. Do you remeber when the crash was reported in the WCG forum.
    According to LostCircuit the bug can only occure with hardware enabled virtualisation. What did the person at WCG use?
    Last edited by justapost; 01-10-2008 at 03:00 PM.

  7. #7
    Xtreme Cruncher
    Join Date
    Aug 2006
    Location
    Denmark
    Posts
    7,747
    Quote Originally Posted by justapost View Post
    There is a detailed description of the TLB-thing at LostCircuit here.

    I dont want to say the bug does not exist, but i experienced it is pretty hard to trigger it.

    Thx, gona try to trigger the bug with WCG. Do you remeber when the crash was reported in the WCG forum.
    According to LostCircuit the bug can only occure with hardware enabled virtualisation. What did the person at WCG use?
    He just ran WCG and it crashed a few times.

    Also i think you misunderstood my post. Its not hard to trigger as such. It just depends on your luck of CPU. If there is a hot thermal spot or not and if so, at what frequencies. I do not believe it s a virtualization only bug. Its a pretty lame excuse. Also you would just have the BIOS setting where you disable or enable virtualization to enable or disable the fix aswell. I call it a smoke screen
    Crunching for Comrades and the Common good of the People.

  8. #8
    Xtreme Addict
    Join Date
    Jan 2005
    Posts
    1,730
    Quote Originally Posted by AMDDeathstar View Post
    TLB...TLB...TLB....

    I've had two Phenom 9500's since Nov.26
    One crunching at stock speeds full load-> NO TLB CRASHES

    The other one been overclocked
    been running at 2772Mhz since Dec.27
    TLB fix disabled
    running games,benchies and crunching-> NO TLB CRASHES

    If I had TLB crashing I don't my Phenom would have made it to 32nd spot on Riesel Sieve Boinc for daily RAC in less then a week
    Computer ID 33998 owner Frank Encruncher
    http://boinc.rieselsieve.com/orig/to...=expavg_credit

    Does it matter if there is TLB bug on Phenom... Answer NO
    How do you know that a crash or data corruption problem was caused by the TLB bug ? Do you have advanced debugging tools ?
    Quote Originally Posted by Heinz Guderian View Post
    There are no desperate situations, there are only desperate people.

  9. #9
    Xtreme Member
    Join Date
    Dec 2006
    Location
    Edmonton,Alberta
    Posts
    182
    Quote Originally Posted by savantu View Post
    How do you know that a crash or data corruption problem was caused by the TLB bug ? Do you have advanced debugging tools ?
    Best answer I can give you is it not crashing under full load at all. The stock one is running Boinc 24/7. The OC'ed one, the only time it's not running Boinc is when I'm gaming or benchin'

    Quote Originally Posted by kl0012 View Post
    The bug is very critical for servers.
    True. Especially if your running virtualization on that Server

    The thread title is about Phenoms not Barcelonas.
    I don't think you'll see too many using a Phenom for virtualized mission critical servers.

    Is TLB bug on Phenom going to crash Average Joes(sinlge OS Windows machine) multithreaded game...No

    The TLB bug doesn't prevent you from overclocking but overclocking should increase your chances of tripping the bug

    Can anybody show me that somebody actually tripped the TLB bug on Phenom(not Bacelona) running a single OS. Please, because I want to try too.

    The crashing on WCG probably has more to do with ram compatibility.

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •