Re: [Beowulf] IEEE 1588 (PTP) - a better cluster clock?

2007-07-20 Thread Patrick Ohly
On Thu, 2007-07-19 at 12:50 +0200, Beat Rubischon wrote: Hello! Am 18.7.2007 17:35 Uhr schrieb Patrick Ohly unter [EMAIL PROTECTED]: For clusters it's time to replace it with a solution that works better in a LAN. [2] http://ptpd.sourceforge.net/ It looks like an interesting tool

Re: [Beowulf] Sidebar: Vista Rant

2007-07-20 Thread John Hearns
Jim Lux wrote: That's it.. a Vista PC is a TV/DVD player that can also run office applications. (I do find humorous all the references to viewing medical imagery simultaneously with watching protected HD-DVD content. Yeah, that's what *I* want the radiologist on call doing.. watching a

RE: [Beowulf] MPI2007 out - strange pop2 results?

2007-07-20 Thread Gilad Shainer
Hi Kevin, I believe that your company is using this list for pure marketing wars for a long time, so don't be surprise when someone responds back. If you want to put technical or performance data, and than to make conclusions out of it, be sure to compare apples to apples. It is easy use the

RE: [Beowulf] MPI2007 out - strange pop2 results?

2007-07-20 Thread Kevin Ball
Hi Gilad, Thank you for the personal attack that came, apparently without even reading the email I sent. Brian asked about why the publicly available, independently run MPI2007 results from HP were worse on a particular than the Cambridge cluster MPI2007 results. I talked about three

Re: [Beowulf] IEEE 1588 (PTP) - a better cluster clock?

2007-07-20 Thread Patrick Geoffray
Hi Patrick, Patrick Ohly wrote: That's all for now (and probably enough stuff, too ... although perhaps you prefer detailed emails over bullet items on a PowerPoint presentation). So what do you think? Since you are asking, here is my personal opinion: I don't think there is a need for a

Re: [Beowulf] MPI2007 out - strange pop2 results?

2007-07-20 Thread John Hearns
Gilad Shainer wrote: Hi Kevin, I believe that your company is using this list for pure marketing wars for a long time, so don't be surprise when someone responds back. Quite a lot of companies post to this list. People from Microsoft, Intel, AMD, Qlocig/Pathscale, Myricom, Scalable

Re: [Beowulf] IEEE 1588 (PTP) - a better cluster clock?

2007-07-20 Thread Greg Lindahl
On Fri, Jul 20, 2007 at 04:07:09PM -0400, Patrick Geoffray wrote: NTP's precision is good enough for comparing log and other administration needs. I agree with this, however, there's another upcoming use of very high resolution synchronized clocks: synchronizing timer ticks across your

Re: [Beowulf] MPI2007 out - strange pop2 results?

2007-07-20 Thread Greg Lindahl
On Fri, Jul 20, 2007 at 10:43:10AM -0700, Gilad Shainer wrote: You had previously compared Mellanox based products on dual single-core machines to the InfiniPath adapter on dual dual-core machines and claim that with InfiniPath there are more Gflops This latest release follow the same

Re: [Beowulf] IEEE 1588 (PTP) - a better cluster clock?

2007-07-20 Thread Patrick Geoffray
Greg Lindahl wrote: time on all your nodes, which should improve performance when you have big clusters and a lot of synchronization in your code. Provided it scales well and it's integrated in the kernel. I guess You could also think about revisiting the gang scheduling ideas with a better

Re: [Beowulf] IEEE 1588 (PTP) - a better cluster clock?

2007-07-20 Thread Jim Lux
At 01:07 PM 7/20/2007, Patrick Geoffray wrote: Hi Patrick, Patrick Ohly wrote: That's all for now (and probably enough stuff, too ... although perhaps you prefer detailed emails over bullet items on a PowerPoint presentation). So what do you think? Since you are asking, here is my personal

RE: [Beowulf] MPI2007 out - strange pop2 results?

2007-07-20 Thread Gilad Shainer
Dear Kevin, You continue to set world records in providing misleading information. You had previously compared Mellanox based products on dual single-core machines to the InfiniPath adapter on dual dual-core machines and claim that with InfiniPath there are more Gflops This latest release

Re: [Beowulf] MPI2007 out - strange pop2 results?

2007-07-20 Thread Scott Atchley
Gilad, And you would never compare your products against our deprecated drivers and five year old hardware. ;-) Sorry, couldn't resist. My colleagues are rolling their eyes... Scot On Jul 20, 2007, at 2:55 PM, Gilad Shainer wrote: Hi Kevin, I believe that your company is using this list