blockProcessing.h

#pragma once
 
#include "forward.h"
 
#include <pyre/journal.h>
 
namespace isce3 { namespace core {
 
// Default min and max block sizes in bytes per thread
constexpr static long long DEFAULT_MIN_BLOCK_SIZE = 1 << 25; // 32MB
constexpr static long long DEFAULT_MAX_BLOCK_SIZE = 1 << 28; // 256MB

enum class MemoryModeBlocksY {
    AutoBlocksY,     
    SingleBlockY,    
    MultipleBlocksY, 
};

enum GeocodeMemoryMode {
    Auto = 0,                       
    SingleBlock = 1,                
    BlocksGeogrid = 2,              
    BlocksGeogridAndRadarGrid = 3   
};
 
// Get "human-readable" string of number of bytes 
std::string getNbytesStr(long long nbytes);

void getBlockProcessingParametersY(const int array_length, const int array_width,
        const int nbands = 1,
        const int type_size = 4, // Float32
        pyre::journal::info_t* channel = nullptr, int* block_length = nullptr,
        int* nblock_y = nullptr, 
        const long long min_block_size = DEFAULT_MIN_BLOCK_SIZE,
        const long long max_block_size = DEFAULT_MAX_BLOCK_SIZE,
        int n_threads = 0);

void getBlockProcessingParametersXY(const int array_length, const int array_width,
        const int nbands = 1,
        const int type_size = 4, // Float32
        pyre::journal::info_t* channel = nullptr,
        int* block_length = nullptr, int* nblock_y = nullptr,
        int* block_width = nullptr, int* nblock_x = nullptr,
        const long long min_block_size = DEFAULT_MIN_BLOCK_SIZE,
        const long long max_block_size = DEFAULT_MAX_BLOCK_SIZE,
        const int snap = 1, int n_threads = 0);
 
}}