Support Forums: Message List - Q&A with Tangosol's Cameron Purdy and Peter Utzschneider http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Fri, 24 May 2013 22:07:22 -0400 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Sun, 10 Aug 2008 13:48:04 -0400 Sun, 10 Aug 2008 13:48:04 -0400 Sun, 10 Aug 2008 13:48:04 -0400 Aug 10, 2008 Karthik R S 0 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Believe it or not Guglielmo, your previous posts on IB were what made me start investigating supporting IB in the first place, so perhaps Mellanox has you to thank ;-)...]]> Mon, 04 Dec 2006 14:20:07 -0500 Mon, 04 Dec 2006 14:20:07 -0500 Mon, 04 Dec 2006 14:20:07 -0500 Dec 4, 2006 Guglielmo Lichtner 1 Re: Apologies http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Thank you Cameron, for bringing up that quote from Mark Twain. I admit my previous post was arrogant and, with copy-and-paste-errors and all, comically pompous.

Guglielmo, I apologize for that posting. I simply misunderstood what you...]]> Mon, 04 Dec 2006 14:15:10 -0500 Mon, 04 Dec 2006 14:15:10 -0500 Mon, 04 Dec 2006 14:15:10 -0500 Dec 4, 2006 Guglielmo Lichtner 0 Apologies http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Sat, 02 Dec 2006 12:19:06 -0500 Sat, 02 Dec 2006 12:19:06 -0500 Sat, 02 Dec 2006 12:19:06 -0500 Dec 2, 2006 Sergey Naftulin 1 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256
Good breeding consists in concealing how much we think of ourselves and how little we think of the other person.
- Mark Twain


I think highly of you, so this quote doesn't bother me in the least....]]> Fri, 01 Dec 2006 19:02:07 -0500 Fri, 01 Dec 2006 19:02:07 -0500 Fri, 01 Dec 2006 19:02:07 -0500 Dec 1, 2006 Cameron Purdy 2 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Good breeding consists in concealing how much we think of ourselves and how little we think of the other person.
- Mark Twain...]]> Fri, 01 Dec 2006 16:27:02 -0500 Fri, 01 Dec 2006 16:27:02 -0500 Fri, 01 Dec 2006 16:27:02 -0500 Dec 1, 2006 Guglielmo Lichtner 3 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256 [..] I was saying is that the most effective design for a system with virtualized communication is different from the most effective design for a system with ethernet, which relies on context switches....]]> Fri, 01 Dec 2006 14:27:16 -0500 Fri, 01 Dec 2006 14:27:16 -0500 Fri, 01 Dec 2006 14:27:16 -0500 Dec 1, 2006 Cameron Purdy 6 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256 But, of course, RDMA is faster. Not that I care. The fastest array processing alogithm, especially on HotSpot:
void handle(int[] data) { return; }...]]> Thu, 30 Nov 2006 13:54:51 -0500 Thu, 30 Nov 2006 13:54:51 -0500 Thu, 30 Nov 2006 13:54:51 -0500 Nov 30, 2006 Guglielmo Lichtner 7 Correction http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Thu, 30 Nov 2006 00:59:24 -0500 Thu, 30 Nov 2006 00:59:24 -0500 Thu, 30 Nov 2006 00:59:24 -0500 Nov 30, 2006 Sergey Naftulin 0 Re: On Infiniband http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Wed, 29 Nov 2006 19:46:16 -0500 Wed, 29 Nov 2006 19:46:16 -0500 Wed, 29 Nov 2006 19:46:16 -0500 Nov 29, 2006 Sergey Naftulin 9 Re: Performance expectations http://www.theserverside.com/discussions/thread.tss?thread_id=43256 How about resilience of addressing on the scenario when you assumed you know where the data is, but suddenly that assumption is no more valid (that node you assumed you should go to dies, or the place of the data changes)?...]]> Wed, 29 Nov 2006 17:11:35 -0500 Wed, 29 Nov 2006 17:11:35 -0500 Wed, 29 Nov 2006 17:11:35 -0500 Nov 29, 2006 Guglielmo Lichtner 0 Re: Performance expectations http://www.theserverside.com/discussions/thread.tss?thread_id=43256
Coherence is providing much more than raw shared memory (a la RDMA); it is exposing object management services. To consume those services, we must pass messages to and from those services, and hence the comms-based view of the...]]> Wed, 29 Nov 2006 14:06:43 -0500 Wed, 29 Nov 2006 14:06:43 -0500 Wed, 29 Nov 2006 14:06:43 -0500 Nov 29, 2006 Robert Varga 1 Re: Performance expectations http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Coherence is providing much more than raw shared memory (a la RDMA); it is exposing object management services. To consume those services, we must pass messages to and from those services, and hence the comms-based view of the world (more...]]> Wed, 29 Nov 2006 13:19:02 -0500 Wed, 29 Nov 2006 13:19:02 -0500 Wed, 29 Nov 2006 13:19:02 -0500 Nov 29, 2006 Guglielmo Lichtner 2 Re: Performance expectations http://www.theserverside.com/discussions/thread.tss?thread_id=43256 I am sure you are going to solve the problem, but this is not really "using" infiniband.

If you really want to use infiniband for data sharing you should use infiniband's RDMA capability (remote direct memory access,) not using it as...]]> Wed, 29 Nov 2006 07:12:29 -0500 Wed, 29 Nov 2006 07:12:29 -0500 Wed, 29 Nov 2006 07:12:29 -0500 Nov 29, 2006 Cameron Purdy 3 Re: Performance expectations http://www.theserverside.com/discussions/thread.tss?thread_id=43256 Infiniband works fine (we've done extensive testing with 3.2) but we're not seeing the benefits that we would expect with it. We are working closely with the Infiniband vendors and the JVM vendors to figure out why, since Infiniband should...]]> Wed, 29 Nov 2006 06:28:10 -0500 Wed, 29 Nov 2006 06:28:10 -0500 Wed, 29 Nov 2006 06:28:10 -0500 Nov 29, 2006 Guglielmo Lichtner 4