Terrible Performance Advice: Just Add More Threads
Description
This meme features white and pink text overlaid on a close-up, angled photograph of an AMD Ryzen Threadripper CPU installed in a motherboard socket. The text provides intentionally bad advice for performance optimization. The top lines in white text read, 'Program doesn't run fast enough? need 60 FPS but CPU only gives you 5? try 50 threads'. Below this, in a smaller, playful pink font, it says, 'Just 50 threads all at once', 'No atomics, no mutexes'. A smaller white text adds, 'Try some SIMD too'. The final, ominous line at the bottom reads, 'You will certainly not regret 50 threads'. The humor comes from the sarcastic suggestion to solve a performance problem by throwing an excessive number of threads at it without any synchronization primitives like mutexes or atomics. For an experienced developer, this is a recipe for disaster, guaranteed to create race conditions, data corruption, and unpredictable behavior, making the program even buggier and likely slower. It satirizes the naive belief that more threads automatically equal more speed, a common misconception for those new to concurrent programming
Comments
17Comment deleted
Ah, the 'thread-and-pray' strategy. It's a great way to transform a deterministic performance bottleneck into a non-deterministic Heisenberg-level debugging nightmare
Sure, spin up 50 threads; modern CPUs love turning your game loop into a live-action cache-coherence benchmark
Ah yes, the classic 'thread-per-pixel' rendering architecture - because nothing says 'senior engineer' like turning a simple frame rate issue into a distributed systems PhD thesis complete with Heisenbug collection and a CPU that sounds like a jet engine taking off
Ah yes, the classic 'throw more threads at it' approach - because nothing says 'I understand concurrency' quite like spawning 50 unsynchronized threads to fight over shared state like it's Black Friday at a data structure store. With no atomics or mutexes, you've essentially created a race condition simulator that'll make your CPU scheduler weep and your cache coherency protocol file for early retirement. The real kicker? You'll burn more CPU cycles on context switches than actual work, turning your 5 FPS into a cinematic 2 FPS slideshow. But hey, at least your thread count looks impressive in the profiler - right next to the 'time spent in kernel mode' metric that's now approaching 95%
50 threads sans atomics: Ignoring Amdahl's law since it only applies to people who read papers
Spawning 50 threads to hit 60 FPS is like telling Amdahl you’ll outvote him - then watching the scheduler turn your cache into a distributed denial‑of‑service
Spawning 50 threads without atomics or mutexes is just benchmarking the scheduler; Amdahl’s Law writes the RCA while your cache lines sue for false sharing
reject gpu, run 50 parallel threads on your cpu Comment deleted
those are rookie numbers, my gpu has 2304 stream processors Comment deleted
that sounds like more fuckery job to be done Comment deleted
Well they're secretly not all independent ofc Comment deleted
i want a nondeterministic Turing machine Comment deleted
we got autism at home Comment deleted
Bus locks go brrrrrr Comment deleted
llvmpipe is slow as fuck Comment deleted
no, use GPU Comment deleted
Which app did you use Comment deleted