It's a dual core amd: vendor_id : AuthenticAMD cpu family : 15 model : 75 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping : 2 cpu MHz : 1000.000 cache size : 512 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
Actually, showing up on one box but not another is strong evidence of a concurrency bug in my experience. Different cpu's at different speeds, with different speed memory and other side components change timings enough to expose bugs that otherwise haven't occurred elsewhere. On 4/26/2011 8:44 PM, David Simcha wrote: > What about the Linux 64 machine? I'm getting some weird segfaults in > std.parallelism that I can't reproduce on my Linux > 64 VM. I'm currently running the std.parallelism unittests in a loop and > they're passing every time. Furthermore, I've > been using std.parallelism for real work on Linux 64 since DMD was capable of > producing 64-bit binaries and it's worked > fine. It also passed a Jinx test a few weeks back. (Jinx is software that's > designed to make buggy multithreaded > programs fail by fiddling with timings. Bartosz Milewski tested > std.parallelism with it after seeing my blog post. The > point is that this is evidence against the issue being a latent concurrency > bug.) Therefore, I'm thinking something > very weird is going on with auto tester. > > Also, I noticed it's segfaulting on FreeBSD, too. I'm installing a FreeBSD > VM right now to look into this. > > On 4/26/2011 9:38 PM, Brad Roberts wrote: >> Good point.. I'll make a note to myself to add system definitions for >> those boxes somewhere obvious since that's important for some things. The >> freebsd box is an ancient pos, but it works: >> >> CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (2992.52-MHz 686-class CPU) >> Origin = "GenuineIntel" Id = 0xf41 Family = f Model = 4 Stepping = 1 >> >> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> >> >> Features2=0x441d<SSE3,DTES64,MON,DS_CPL,CNXT-ID,xTPR> >> TSC: P-state invariant >> real memory = 2147483648 (2048 MB) >> avail memory = 2091065344 (1994 MB) >> ACPI APIC Table:<A M I OEMAPIC> >> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs >> FreeBSD/SMP: 1 package(s) x 1 core(s) x 2 HTT threads >> cpu0 (BSP): APIC ID: 0 >> cpu1 (AP/HT): APIC ID: 1 >> >> >> >> On Tue, 26 Apr 2011, David Simcha wrote: >> >>> Date: Tue, 26 Apr 2011 21:02:07 -0400 >>> From: David Simcha<[email protected]> >>> Reply-To: Discuss the phobos library for D<[email protected]> >>> To: Discuss the phobos library for D<[email protected]> >>> Subject: Re: [phobos] [D-Programming-Language/phobos] 3cf671: Add >>> std.parallelism. >>> >>> I actually realized that FreeBSD matters by looking at the auto tester to >>> make >>> sure the checkin wasn't breaking anything on OSX, which I also don't have >>> access to. I have a static assert that will probably fail (fixing it right >>> now since it's trivial). The other issue is that FreeBSD appears broken for >>> unrelated reasons right now. I just pushed a fix based on reading some >>> documentation about FreeBSD, but I have no idea whether it's right or not >>> because I don't have a FreeBSD box to test it on. Also, the functionality >>> is >>> hard to automatically test because you need to know how many cores the box >>> you're running on actually has. >>> >>> On 4/26/2011 8:45 PM, Brad Roberts wrote: >>>> Assuming you have a good unit test for it, just check the auto tester... >>>> Yes, freebsd/32 is supported for d2. >>>> >>>> On Tue, 26 Apr 2011, David Simcha wrote: >>>> >>>>> Just realized, are we supporting D2 on FreeBSD yet? If so, I need to fix >>>>> std.parallelism to detect the number of CPUs on it. I think this is the >>>>> same >>>>> as on OSX, though. (I used sysctlbyname on OSX. Someone please confirm >>>>> this >>>>> is right on BSD.) >>>>> >>>>> On 4/26/2011 8:06 PM, [email protected] wrote: >>>>>> Branch: refs/heads/master >>>>>> Home: https://github.com/D-Programming-Language/phobos >>>>>> >>>>>> Commit: 3cf67160b82d87d8de0bc7564aa1474149a92349 >>>>>> >>>>>> https://github.com/D-Programming-Language/phobos/commit/3cf67160b82d87d8de0bc7564aa1474149a92349 >>>>>> Author: dsimcha<[email protected]> >>>>>> Date: 2011-04-26 (Tue, 26 Apr 2011) >>>>>> >>>>>> Changed paths: >>>>>> M changelog.dd >>>>>> M posix.mak >>>>>> A std/parallelism.d >>>>>> M unittest.d >>>>>> M win32.mak >>>>>> >>>>>> Log Message: >>>>>> ----------- >>>>>> Add std.parallelism. >>>>>> _______________________________________________ phobos mailing list [email protected] http://lists.puremagic.com/mailman/listinfo/phobos
