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1gb-16threads

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This commit is contained in:
Kajari Ghosh 2018-04-20 09:06:45 -04:00
parent 0ba69e3832
commit 0901dd87ac
1 changed files with 11 additions and 2 deletions
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13
include/engine/unpacking_cache.hpp
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@ -42,18 +42,27 @@ class UnpackingCache
// = n * 21 bytes
// Total = n * (25 + 21) = n * 46 bytes
// Total cache size: 500 mb = 500 * 1024 *1024 bytes = 524288000 bytes
// Total cache size: 1024 mb = 1024 * 1024 *1024 bytes = 1073741824 bytes
// Total cache size: 500 mb = 500 * 1024 *1024 bytes = 524288000 bytes
// THREAD LOCAL STORAGE
// THREAD LOCAL STORAGE (500 mb)
// Number of lines we need = 524288000 / 46 / number of threads = 11397565 / number of threads
// 16 threads: 11397565 / 16 = 712347
// 8 threads: 11397565 / 8 = 1424695
// 4 threads: 11397565 / 4 = 2849391
// 2 threads: 11397565 / 2 = 5698782
// THREAD LOCAL STORAGE (1024 mb)
// Number of lines we need = 1073741824 / 46 / number of threads = 23342213 / number of threads
// 16 threads: 23342213 / 16 = 1458888
// 8 threads: 23342213 / 8 = 2917776
// 4 threads: 23342213 / 4 = 5835553
// 2 threads: 23342213 / 2 = 11671106
// SHARED STORAGE CACHE
// Number of lines we need for shared storage cache = 524288000 / 20 = 26214400
UnpackingCache(unsigned timestamp) : m_cache(712347), m_current_data_timestamp(timestamp){};
UnpackingCache(unsigned timestamp) : m_cache(1458888), m_current_data_timestamp(timestamp){};
UnpackingCache(std::size_t cache_size, unsigned timestamp)
: m_cache(cache_size), m_current_data_timestamp(timestamp){};