Massive unapologetic storage firepower part 4: On the test track with a Forte unit … vaaaaROOOOOOMMMMMMM!!!!!

I am trying to help people conceptualize the experience. Here is a video depicting very fast, very powerful cars and their sound signatures. This is a good start. Take one of those awesome machines, and turn off half the engine. So it is literally running with 1/2 of its power turned off. Remember this. There … Read moreMassive unapologetic storage firepower part 4: On the test track with a Forte unit … vaaaaROOOOOOMMMMMMM!!!!!

When infinite resources aren't, and why software assumes they are infinite

We’ve got customers with very large resource machines. And software that sees all those resources and goes “gimme!!!!”. So people run. And then more people use it. And more runs. Until the resources are exhausted. And hilarity (of the bad kind) ensues. These are firedrills. I get an open ticket that “there must be something … Read moreWhen infinite resources aren't, and why software assumes they are infinite

Testing a new @scalableinfo Unison #Ceph appliance node for #hpc #storage

Simple test case, no file system … using raw devices, what can I push out to all 60 drives in 128k chunks. Actually this is part of our burn-in test series, I am looking for failures/performance anomalies. —-total-cpu-usage—- -dsk/total- -net/total- —paging– —system– usr sys idl wai hiq siq| read writ| recv send| in out | … Read moreTesting a new @scalableinfo Unison #Ceph appliance node for #hpc #storage

Video interview: face melting performance in #hpc #nvme #storage @scalableinfo

Oh no … we didn’t say “face melting” … did we? Oh. Yes. We. Did. The interview is here at the always wonderful InsideHPC.com You can see the video itself here on YouTube, but read Rich’s transcript. I was losing my voice, and he captured all of the interview in text. Take home messages: Insane … Read moreVideo interview: face melting performance in #hpc #nvme #storage @scalableinfo

There are no silver bullets, 2015 edition

In Feb 2013, I opined (with some measure of disgust) that people were looking at various software packages as silver bullets, these magical bits of a stack which could suddenly transform massive steaming piles of bits (big … uh … “data” ?) into golden nuggets of actionable data. Many of the “solutions” marketed these days … Read moreThere are no silver bullets, 2015 edition

A wonderful read on metrics, profiling, benchmarking

Brendan Gregg’s writings are always interesting and informative. I just saw a link on hacker news to a presentation he gave on “Broken Performance Tools“. It is wonderful, and succinctly explains many thing I’ve talked about here and elsewhere, but it goes far beyond what I’ve grumbled over. One of my favorite points in there … Read moreA wonderful read on metrics, profiling, benchmarking

Shiny #HPC #storage things at #SC15

Assuming everything goes as planned (HA!) we should have a number of very cool things at SC15. 100Gb Unison storage system with BeeGFS 100Gb Unison Ceph system 100Gb connection to a partner/customer booth Forte 100Gb is awesome. The first time I ran an iperf bidirectional test, saw 20GB/s … it blew me away. 40/56GbE is … Read moreShiny #HPC #storage things at #SC15

Cat peeking out of bag: Schedule of presentations and talks in our booth for SC15 is up

I mentioned previously that we have some new (shiny) things … and it looks like you’ll be able to hear about them at my talk. See the schedule for timing information. This said, please note that we have a terrific line up of people giving talks: Fintan Quill from Kx on kdb+ … which is … Read moreCat peeking out of bag: Schedule of presentations and talks in our booth for SC15 is up