Re: [Valgrind-users] tool=cachegrind always reports LL misses, even if the cache is bigger than the used memory

I would think that, regardless of cache size, the *first* access to a line causes a miss. The PowerPC and relatives have an instruction which force-allocates (if necessary) AND zeroes an entire cache line, so in some ways the "first" access is a Write which succeeds with no miss.

Re: [Valgrind-users] tool=cachegrind always reports LL misses, even if the cache is bigger than the used memory

On 4/25/2023 3:56 PM, Volker Dirr wrote: Hallo, maybe I misunderstood, but it look like I don't understand tool=cachegrind correct (or there is a bug). I have a software. If it runs, then the task manager tells me that is use only 38 MB memory. Now i used cachegrind like this: valgrind --too

[Valgrind-users] tool=cachegrind always reports LL misses, even if the cache is bigger than the used memory

Hallo, maybe I misunderstood, but it look like I don't understand tool=cachegrind correct (or there is a bug). I have a software. If it runs, then the task manager tells me that is use only 38 MB memory. Now i used cachegrind like this: valgrind --tool=cachegrind --LL=2097152,16,64 ./fet-cl