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  • caching - Line size of L1 and L2 caches - Stack Overflow
    Based on this tag information, if I re-create the addr it may span multiple lines in the L1 cache if the line-sizes of L1 and L2 cache are not same Does the architecture really bother about flushing both the lines or it just maintains L1 and L2 cache with the same line-size
  • cpu - Why has the size of L1 cache not increased very much over the . . .
    Actually L1 cache size IS the biggest bottleneck for speed in modern computers The pathetically tiny L1 cache sizes may be the sweetspot for the price, but not the performance
  • Why is the size of L1 cache smaller than that of the L2 cache in most . . .
    This makes increasing L1 size beyond the current size prohibitively expensive in terms of power, and probably even latency Spending more of your power budget on L1D cache logic would leave less power available for out-of-order execution, decoding, and of course L2 cache and so on
  • Reasons for L1 Cache Size in Modern Processors - Stack Overflow
    So when L1 gets bigger, search becomes slower given the sophistication of HW cache solution stays same You can increase the sophistication of solution but this will have a negative effect on space, energy and heat Continuing on size, that's if you make L1 bigger you need space to store those bits and bytes creating the same space
  • Optimization Challenge Due to L1 Cache with Numba
    Is there a way to maintain the performance while having the result be a single array with Python, Numba or any other package? Or is there a way that will allow me to recombine these arrays without a performance penalty for the resulting array exceeding the L1 cache size?
  • How to receive L1, L2 L3 cache size using CPUID instruction in x86
    I encountered a problem during preparing an assembler x86 project which subject is to write a program getting L1 data, L1 code, L2 and L3 cache size I tried to find something in Intel Documenta
  • How to get the size of the CPU cache in Linux - Stack Overflow
    TODO: Create a minimal C example, lazy now, asked at: How to receive L1, L2 L3 cache size using CPUID instruction in x86 ARM also has an architecture-defined mechanism to find cache sizes through registers such as the Cache Size ID Register (CCSIDR), see the ARMv8 Programmers' Manual 11 6 "Cache discovery" for an overview
  • Aligning to cache line and knowing the cache line size
    Making the compiler generate code for a runtime-variable cache line size could eat up some of the benefit of aligning things, especially in cases of auto-vectorization where it helps the compiler make better code if it knows a pointer is aligned to a cache line width (which is wider than the SIMD vector width)
  • compiler optimization - Should I set the `l1-cache-size` and `l2-cache . . .
    I saw in the maunals of gcc, that you can add the arguments --param l1-cache-size=<num> and --param l2-cache-size=<num> to gcc Is it recommended to set them if you know that: the program will only run on your system you know the sizes of both caches or does gcc set them to an appropriate value on its own?
  • Programmatically get the cache line size? - Stack Overflow
    All platforms welcome, please specify the platform for your answer A similar question: How to programmatically get the CPU cache page size in C++?





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