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Did I miss it or did the author fail to mention the most important variable of this comparison, specifically, the frequency at which the memory of the AMD serve

Did I miss it or did the author fail to mention the most important variable of this comparison, specifically, the frequency at which the memory of the AMD server CPU was operating at. If you're doing memory benchmarks, why omit such essential details like memory frequency, as this can have a bigger impact here than the CPU itself?

masklinn 5y ago
The entire thing seems incredibly half-assed e.g. they're testing a 64 cores CPU on single-threaded workload (literally the only mentions of threads is that they "disable multithreading"), they repeatedly harp on the server being "over 50k" but the CPU is 5 so I can only assume most of the 50k are in the > 1 TB of eight-channel DDR4 memory which you apparently need to... bench hashmap lookups? The mac's pricing seems pretty bullshit as well as the lowest price to get 64GB is $3500 (Max with 24 GPU cores, and a measly 512GB SSD), which does not qualify as "around $3000" in my books.
jhgb 5y ago
Setting aside the fact that Threadripper is not really a server CPU, it tops at DDR4-3200 when it comes to memory support. Considering the custom build, it seems the most likely option. (As in, why would it use anything slower for no good reason?)
- glandium 5y ago
  The Threadripper Pro has 1TB memory, which means it's likely ECC registered, which is slower at the same frequency, and it might not even be DDR4-3200 in the first place because it's rather new in ECC, and server hardware manufacturers like to use old stuff.
ashvardanian 5y ago
Its configured with the fastest memory possible on the Threadripper. The exact specs and RAM stick models match the ones mentioned in the preceding article, I have linked below. We didnt include those, as we don’t know the exact specs of RAM modules in MacBooks. https://unum.cloud/post/2021-11-25-ycsb/#our-toys https://unum.cloud/post/2021-11-25-ycsb/#our-toys

masklinn 5y ago

The entire thing seems incredibly half-assed e.g. they're testing a 64 cores CPU on single-threaded workload (literally the only mentions of threads is that they "disable multithreading"), they repeatedly harp on the server being "over 50k" but the CPU is 5 so I can only assume most of the 50k are in the > 1 TB of eight-channel DDR4 memory which you apparently need to... bench hashmap lookups? The mac's pricing seems pretty bullshit as well as the lowest price to get 64GB is $3500 (Max with 24 GPU cores, and a measly 512GB SSD), which does not qualify as "around $3000" in my books.

jhgb 5y ago

Setting aside the fact that Threadripper is not really a server CPU, it tops at DDR4-3200 when it comes to memory support. Considering the custom build, it seems the most likely option. (As in, why would it use anything slower for no good reason?)

glandium 5y ago
The Threadripper Pro has 1TB memory, which means it's likely ECC registered, which is slower at the same frequency, and it might not even be DDR4-3200 in the first place because it's rather new in ECC, and server hardware manufacturers like to use old stuff.

ashvardanian 5y ago

Its configured with the fastest memory possible on the Threadripper. The exact specs and RAM stick models match the ones mentioned in the preceding article, I have linked below. We didnt include those, as we don’t know the exact specs of RAM modules in MacBooks. https://unum.cloud/post/2021-11-25-ycsb/#our-toys https://unum.cloud/post/2021-11-25-ycsb/#our-toys