[mmcclellan]

This was a good idea for a test. I'll definitely check out the author's other stuff. Commenting briefly on cost: while the article mentions the free 32 bit version early on, the actual benchmarks were done using the commercial version. I've had the impression the comercial version was cost prohibitive for us poor folks. For those interested in experimenting with Xeon Phi though, it looks like you can get started for ~$5k: http://dap.xeonphi.com/

[Twirrim]

If you just want to meddle with a Xeon Phi, you can get some as cheap as $300: https://www.amazon.com/Intel-BC31S1P-Xeon-31S1P-Coprocessor/... , though that's from the 3100 rather than 7200 family, and so won't perform as fast. That kind of money puts it more into the hobby territory, though.

[protomyth]

Is there a difference in how you program the different Xeon Phi families?

[mtanski]

With the new generation there is now a difference. This is because this generation has Phis in both addin card (PCIe) and a bootable CPU package (when you run Linux or windows or whatever on the Phi).

Generally with the PCIe one you're running something like OpenCL and with system CPU package you run threads and processes like you normally would.

Technically you could run software directly on the old addin cards since they boot to Linux but you had handle the distribution, running and communication of your software with the host. (you could run any x86_64 binary)

[VodkaHaze]

Do you still need the costly intel compiler suite to run some C++ code on it?

Honestly they make it pretty hard to hack with as a device. It could succeed as a device if they let devs easily create cool applications with it.

[mtanski]

Both gcc & llvm can compile binaries targeting the Phi. Since it runs in Linux (as addin PCIe card or host Linux CPU) it can run any kind of ELF x86_64 binary. They also support generating AVX-512 instruction of the Phi.