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simpler is better

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This commit is contained in:
Ahmet Inan 2024-03-26 19:15:45 +01:00
commit 270519aa79
2 changed files with 19 additions and 17 deletions
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22
tests/cpf_regression_test.cc
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@ -28,42 +28,44 @@ void cpf_test(int trials)
auto rnd_dat = std::bind(distribution(0, (1 << value_bits) - 1), generator);
while (--trials) {
int block_count = rnd_cnt();
int identifiers_total = PF::P / 2 - block_count;
int idents_total = PF::P / 2 - block_count;
int block_values = rnd_len();
int block_bytes = block_values * value_bytes;
int data_values = block_count * block_values;
int data_bytes = data_values * value_bytes;
IO *subs = new IO[block_count];
IO *orig = new IO[data_values];
IO *data = new IO[data_values];
IO *blocks = new IO[data_values+block_count];
IO *blocks = new IO[data_values];
IO *idents = new IO[idents_total];
for (int i = 0; i < data_values; ++i)
orig[i] = rnd_dat();
auto identifiers = new int[identifiers_total];
for (int i = 0; i < identifiers_total; ++i)
identifiers[i] = block_count + i;
for (int i = 0; i < idents_total; ++i)
idents[i] = block_count + i;
for (int i = 0; i < block_count; i++) {
std::uniform_int_distribution<int> hat(i, identifiers_total - 1);
std::swap(identifiers[i], identifiers[hat(generator)]);
std::uniform_int_distribution<int> hat(i, idents_total - 1);
std::swap(idents[i], idents[hat(generator)]);
}
auto enc_start = std::chrono::system_clock::now();
for (int i = 0; i < block_count; ++i)
crs.encode(orig, blocks + (block_values+1) * i, identifiers[i], block_values, block_count);
subs[i] = crs.encode(orig, blocks + block_values * i, idents[i], block_values, block_count);
auto enc_end = std::chrono::system_clock::now();
auto enc_usec = std::chrono::duration_cast<std::chrono::microseconds>(enc_end - enc_start);
double enc_mbs = double(data_bytes) / enc_usec.count();
auto dec_start = std::chrono::system_clock::now();
for (int i = 0; i < block_count; ++i)
crs.decode(data + block_values * i, blocks, identifiers, i, block_values, block_count);
crs.decode(data + block_values * i, blocks, subs, idents, i, block_values, block_count);
auto dec_end = std::chrono::system_clock::now();
auto dec_usec = std::chrono::duration_cast<std::chrono::microseconds>(dec_end - dec_start);
double dec_mbs = double(data_bytes) / dec_usec.count();
std::cout << "block count = " << block_count << ", block size = " << block_bytes << " bytes, encoding speed = " << enc_mbs << " megabyte per second, decoding speed = " << dec_mbs << " megabyte per second" << std::endl;
for (int i = 0; i < data_values; ++i)
assert(data[i] == orig[i]);
delete[] identifiers;
delete[] idents;
delete[] blocks;
delete[] orig;
delete[] data;
delete[] subs;
}
}