Date: Wed, 18 Sep 2013 16:42:32 -0400 From: Yaniv Sapir <yaniv@...pteva.com> To: john-dev <john-dev@...ts.openwall.com> Subject: Re: bcrypt-parallella on 64-core (was: Katja's weekly report #13) (A very long shot:) In the stuck cores, do you have external loads into registers R53, R0, R2, R38, respectively? On Wed, Sep 18, 2013 at 2:16 PM, Katja Malvoni <kmalvoni@...il.com> wrote: > Hi Yaniv, > > These are register values from cores which reads start flag correctly and > reaches idle instruction: > > [0x000f0400] = 0x00080000 > [0x000f0404] = 0x00001000 > [0x000f0408] = 0x000007e8 > [0x000f040c] = 0x00000000 > [0x000f0410] = 0x00000000 > [0x000f0414] = 0x00000000 > [0x000f0418] = 0x00000000 > [0x000f041c] = 0x00000000 > [0x000f0420] = 0x00000858 > [0x000f0424] = 0x000003ff > [0x000f0428] = 0x00000000 > [0x000f042c] = 0x00000000 > [0x000f0430] = 0x00000000 > [0x000f0434] = 0x00000000 > [0x000f0438] = 0x00000000 > [0x000f043c] = 0x00000000 > [0x000f0440] = 0x00000000 > [0x000f0444] = 0x00002600 > [0x000f0448] = 0x00000000 > > But cores which don't read and update start flags have these values: > core (3, 5) has zero on all addresses except [0x000f0444] = 0x00003500 > core (4, 6) has zero on all locations > core (7, 4) has zero on all addresses except [0x000f0444] = 0x00000200 > core (7, 5) has zero on all addresses except [0x000f0444] = 0x00002600 > > It seems that some cores don't start computation. So far it looks random, > only regularity I see is that first two rows work (If I use only first two > rows I get 1207 c/s). > > Katja > -- =========================================================== Yaniv Sapir Adapteva Inc. 1666 Massachusetts Ave, Suite 14 Lexington, MA 02420 Phone: (781)-328-0513 (x104) Email: yaniv@...pteva.com Web: www.adapteva.com ============================================================ CONFIDENTIALITY NOTICE: This e-mail may contain information that is confidential and proprietary to Adapteva, and Adapteva hereby designates the information in this e-mail as confidential. The information is intended only for the use of the individual or entity named above. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in this transmission is strictly prohibited and that you should immediately destroy this e-mail and its contents and notify Adapteva. ============================================================== Content of type "text/html" skipped
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