Sorry for the confusion :-/powerful owl wrote: I misunderstood your numbers, ... However I realize now that each "job" is the same amount of work.
Running on the DM a single job, it runs in 7m42sm, so one core at 4.5GHz max boost all the time.
I think the DeskMinis are the reasonable trade-off in price/size/performance/cost when you need the performance.powerful owl wrote: It seems you could pack more compute power into a tighter space, but there's no magic, you still have to get rid of the heat...
I bought the H470 with 64GiB memory and paid almost 800 EUR (meanwhile memory got more expensive again :-/...)
Today you get double the cores and double the memory for the same money as about 3 years ago.
You get about one hyperthreaded i7 core with 8 GiB memory for about 100 EUR.
Or you go with less powerful and pay less, and also older DeskMinis already are available on the used market.
At the low end with a C4 you get per one core 1 GiB.
A larger cluster of C4s does not make sense to me, pure distributed compute nodes need to be leaner and cheaper for that, as exlibris also observed.
I think my mix of leftover C2s and C4s in a cluster is a good patchwork for learning and experimenting, but scale up to more nodes... no?
Between these high-end and low-end options is the H2.
Odroid chose very wisely the market segment: small size AND silent AND 2 nics AND low idle power.
Use as NAS or build a small cluster, when you need x86 for compatibility reasons or performance.
But having benchmarked various things over the last months, I'm seriously considering to tear down and sell my H2 cluster now.
Real compute jobs run faster on DeskMinis, and time is also money while maintaining the "middle ground" in performance with H2s.
I learned a lot from my H2 cluster, I'm grateful, but maintaining an extra rootfs and non-AVX builds is work,
and now that the H2+ is the standard the H2 lost some resale value -- sell them now or keep them for fun?
Alternatively, a cluster of N2+ derived compute modules as suggested by others?
I don't know where to position that in the market?
Just thinking aloud... ;-)