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u/trailing_zero_count

r/servers r/cpp r/threadripper
▲ 15 r/servers

FYI: EPYC 7V73X has 240W TDP Max

I wanted to share somewhere since there's almost no information about this chip online - only an old wccftech listing that incorrectly lists the TDP as 280W, and some eBay listings that do the same thing.

The 7V73X is an Azure custom bin, only available secondhand. I bought mine from a Chinese seller on eBay. AFAICT it's identical in all respects to a 7773X, except that 7773X has 280W cTDP max, but 7V73X is hard limited to 240W cTDP. I verified using AMD HSMP + E-SMI tool. Mine's installed in an Asrock ROMED8-2T and the only other issue I had was getting the mounting pressure dialed in correctly (manifests as missing DIMM errors otherwise).

Nonetheless I still recomend it if you're looking for a V-Cache build, or trying to save money by going with a DDR4 build. The secondhand version was a lot cheaper than the 7773X equivalent. The only catch is vetting your seller carefully - there were a lot of low-rep seller listings that gave me bad vibes.

reddit.com
u/trailing_zero_count — 7 days ago
▲ 8 r/threadripper

FYI: EPYC 7V73X has 240W TDP Max

This isn't exactly the right sub for this, but I wanted to share somewhere since there's almost no information about this chip online - only an old wccftech listing that incorrectly lists the TDP as 280W, and some eBay listings that do the same thing.

The 7V73X is an Azure custom bin, only available secondhand. I bought mine from a Chinese seller on eBay. AFAICT it's identical in all respects to a 7773X, except that 7773X has 280W cTDP max, but 7V73X is hard limited to 240W cTDP. I verified using AMD HSMP + E-SMI tool. Mine's installed in an Asrock ROMED8-2T and the only other issue I had was getting the mounting pressure dialed in correctly (manifests as missing DIMM errors otherwise).

Nonetheless I still recomend it if you're looking for a V-Cache build, or trying to save money by going with a DDR4 build. Secondhand versions can be found significantly discounted from the 7773X equivalent.

reddit.com
u/trailing_zero_count — 8 days ago
▲ 24 r/cpp

coro_util queues: library-agnostic queues for C++20 coroutines

Repo: https://github.com/tzcnt/coro_util

Documentation: https://fleetcode.com/oss/coro_util/docs/queues/index.html

coro_util is a collection of data structures for C++20 coroutines that aren't tied to any task or executor library. Each structure is a template that accepts a policy object which binds it to your library of choice. I've include pre-configured adapters for several libraries: YACLib, Boost.Cobalt, Asio, Boost.Capy, libfork, concurrencpp, cppcoro, and libcoro. Adding a custom adapter for your own library is also relatively simple, and I've provided an agent prompt that automates it.

These queues were all written for the TooManyCooks framework, which as far as I know, has the most complete suite of general purpose async data structures of any publicly available library. This first edition only includes the 5 queues. The next batch will include the control structures (mutex, semaphore, etc.). I've decided to port them to be dependency-free in an effort to advance the interoperability of the C++20 coroutine ecosystem, which IMO is too siloed right now. I aim to demonstrate and evangelize for a style of code that is "sans-executor/task".

All of the queues are lock-free and wait-free on the fast path, and offer purely zero-copy operation. They have been rigorously tested and examined over their lifetime in TooManyCooks, and I believe them to be production-ready.

u/trailing_zero_count — 12 days ago