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fireice-uk / xmr-stak

Free Monero RandomX Miner and unified CryptoNight miner
GNU General Public License v3.0
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Several problems on CPU mining after fork. #2293

Open hugopnabais opened 5 years ago

hugopnabais commented 5 years ago

Several problems started after latest for 1788000:

1º Xmr-stak 2.10.0 is crashing in all my computers with old CPUs that CPU mine. happens on several different servers. Example of message: Problem Event Name: APPCRASH Application Name: xmr-stak.exe Application Version: 0.0.0.0 Application Timestamp: 5c818ea6 Fault Module Name: xmr-stak.exe Fault Module Version: 0.0.0.0 Fault Module Timestamp: 5c818ea6 Exception Code: c000001d Exception Offset: 0000000000063fce OS Version: 6.3.9600.2.0.0.272.7

2º Mining on modern CPUs after a while slows down a lot and I have to restart xmr-stak to get performance back!

Basic information

1º crash problem example CPU intel Xeon E5520 1º crash problem example CPU AMD Optron 6172 1º crash problem example CPU intel Q9500

2º slowdown problem example intel i7-4790k 2º slowdown problem example intel i7-8550 2º slowdown problem example intel i7-3520M

Version 2.10.0 was working fine before fork!

Compile issues

Mining on pool supportxmr.com

psychocrypt commented 5 years ago

Do you compiled the miner or do you use the pr-compiled binaries?

rickbb commented 5 years ago

Not trying to hijack the thread, but have the same issue with intel Pentium cpu. I set the cpu to null in the config.txt and stak then runs with gpus, but there is other issues. I will put in a separate thread.

hugopnabais commented 5 years ago

pre-compiled binaries

tevador commented 5 years ago

2º Mining on modern CPUs after a while slows down a lot and I have to restart xmr-stak to get performance back!

Confirmed, having the same issue. CPU hashrate randomly drops from ~510 H/s to ~110 H/s and I have to restart to fix it.

Linux, v2.10.0-56d2770, self-compiled.

I would guess it switches from JIT compiler to interpreter for some reason.

Spudz76 commented 5 years ago

Exception Code: c000001d is an illegal instruction, meaning you've hit AES or AVX2 code within a CPU that doesn't have it.

set aes false in config.txt and asm off in cpu.txt

ceruleanfirm commented 5 years ago

Hi,

v2.10.0 no pre-compiled

:~/xmr-stak$ uname -a Linux o0 4.15.0-46-generic #49~16.04.1-Ubuntu SMP Tue Feb 12 17:45:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux :~/xmr-stak$ grep CPU /proc/cpuinfo model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz model name : Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz :~/xmr-stak$ grep '^\"' config.txt "call_timeout" : 10, "retry_time" : 30, "giveup_limit" : 0, "verbose_level" : 3, "print_motd" : true, "h_print_time" : 60, "aes_override" : true, "use_slow_memory" : "no_mlck", "tls_secure_algo" : true, "daemon_mode" : false, "output_file" : "", "httpd_port" : 8888, "http_login" : "", "http_pass" : "", "prefer_ipv4" : true, :~/xmr-stak$

I restarted xmr-stak after the fork in order to test changes in nvidia.txt. And then, 21 h/s per cpu thread. "can do better ..." Pretty sure it was normal hashrate before restart. Tried with "aes_override" : null, same same ...

werdwerdus commented 5 years ago

Exception Code: c000001d is an illegal instruction, meaning you've hit AES or AVX2 code within a CPU that doesn't have it.

set aes false in config.txt and asm off in cpu.txt

this worked for me on i7-930 and i5-760, thank you

ceruleanfirm commented 5 years ago

Thx for reply, but no. i7-7700K support AES-NI ...

Spudz76 commented 5 years ago

Yes that's great, but Windows can disable AVX regardless what your CPU supports which is what is failing (AVX exists but is disabled by OS, which we didn't previously check the software-offswitch).

psychocrypt commented 5 years ago

check your bioas settings. aes support can be disabled in the most bios

hugopnabais commented 5 years ago

On my i7-4790k (supports AES-NI) I have 4 threads each at around 80KH/s (total 320KH/s) and after a while, it drops to around 20 KH/s per thread for no apparent reason (total 80KH/s). If I close and open xmr-stak it goes back to 80KH/s per thread. This happens on several different computers that all support AES-NI.

psychocrypt commented 5 years ago

this bug is already solved in the dev branch and will be part of the today release.

hugopnabais commented 5 years ago

Ok, thank you, I was just making sure you guys were aware.

ceruleanfirm commented 5 years ago

I've just cloned dev branch and ... it'ssss aliiiive ! Thx !