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258 lines
8.7 KiB
258 lines
8.7 KiB
#include <cassert>
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#include <set>
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#include "json11.hpp"
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#include "selfdrive/common/util.h"
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#include "selfdrive/common/clutil.h"
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#include "selfdrive/modeld/thneed/thneed.h"
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using namespace json11;
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extern map<cl_program, string> g_program_source;
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void Thneed::load(const char *filename) {
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printf("Thneed::load: loading from %s\n", filename);
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string buf = util::read_file(filename);
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int jsz = *(int *)buf.data();
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string err;
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string jj(buf.data() + sizeof(int), jsz);
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Json jdat = Json::parse(jj, err);
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map<cl_mem, cl_mem> real_mem;
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real_mem[NULL] = NULL;
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int ptr = sizeof(int)+jsz;
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for (auto &obj : jdat["objects"].array_items()) {
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auto mobj = obj.object_items();
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int sz = mobj["size"].int_value();
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cl_mem clbuf = NULL;
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if (mobj["buffer_id"].string_value().size() > 0) {
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// image buffer must already be allocated
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clbuf = real_mem[*(cl_mem*)(mobj["buffer_id"].string_value().data())];
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assert(mobj["needs_load"].bool_value() == false);
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} else {
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if (mobj["needs_load"].bool_value()) {
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//printf("loading %p %d @ 0x%X\n", clbuf, sz, ptr);
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clbuf = clCreateBuffer(context, CL_MEM_COPY_HOST_PTR | CL_MEM_READ_WRITE, sz, &buf[ptr], NULL);
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ptr += sz;
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} else {
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clbuf = clCreateBuffer(context, CL_MEM_READ_WRITE, sz, NULL, NULL);
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}
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}
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assert(clbuf != NULL);
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if (mobj["arg_type"] == "image2d_t" || mobj["arg_type"] == "image1d_t") {
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cl_image_desc desc = {0};
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desc.image_type = (mobj["arg_type"] == "image2d_t") ? CL_MEM_OBJECT_IMAGE2D : CL_MEM_OBJECT_IMAGE1D_BUFFER;
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desc.image_width = mobj["width"].int_value();
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desc.image_height = mobj["height"].int_value();
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desc.image_row_pitch = mobj["row_pitch"].int_value();
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desc.buffer = clbuf;
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cl_image_format format;
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format.image_channel_order = CL_RGBA;
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format.image_channel_data_type = CL_HALF_FLOAT;
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clbuf = clCreateImage(context, CL_MEM_READ_WRITE, &format, &desc, NULL, NULL);
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assert(clbuf != NULL);
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}
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real_mem[*(cl_mem*)(mobj["id"].string_value().data())] = clbuf;
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}
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map<string, cl_program> g_programs;
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for (const auto &[name, source] : jdat["programs"].object_items()) {
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if (debug >= 1) printf("building %s with size %zu\n", name.c_str(), source.string_value().size());
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g_programs[name] = cl_program_from_source(context, device_id, source.string_value());
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}
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for (auto &obj : jdat["binaries"].array_items()) {
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string name = obj["name"].string_value();
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size_t length = obj["length"].int_value();
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if (debug >= 1) printf("binary %s with size %zu\n", name.c_str(), length);
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g_programs[name] = cl_program_from_binary(context, device_id, (const uint8_t*)&buf[ptr], length);
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ptr += length;
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}
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for (auto &obj : jdat["kernels"].array_items()) {
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auto gws = obj["global_work_size"];
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auto lws = obj["local_work_size"];
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auto kk = shared_ptr<CLQueuedKernel>(new CLQueuedKernel(this));
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kk->name = obj["name"].string_value();
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kk->program = g_programs[kk->name];
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kk->work_dim = obj["work_dim"].int_value();
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for (int i = 0; i < kk->work_dim; i++) {
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kk->global_work_size[i] = gws[i].int_value();
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kk->local_work_size[i] = lws[i].int_value();
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}
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kk->num_args = obj["num_args"].int_value();
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for (int i = 0; i < kk->num_args; i++) {
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string arg = obj["args"].array_items()[i].string_value();
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int arg_size = obj["args_size"].array_items()[i].int_value();
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kk->args_size.push_back(arg_size);
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if (arg_size == 8) {
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cl_mem val = *(cl_mem*)(arg.data());
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val = real_mem[val];
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kk->args.push_back(string((char*)&val, sizeof(val)));
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} else {
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kk->args.push_back(arg);
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}
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}
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kq.push_back(kk);
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}
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clFinish(command_queue);
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}
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void Thneed::save(const char *filename, bool save_binaries) {
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printf("Thneed::save: saving to %s\n", filename);
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// get kernels
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std::vector<Json> kernels;
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std::set<string> saved_objects;
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std::vector<Json> objects;
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std::map<string, string> programs;
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std::map<string, string> binaries;
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for (auto &k : kq) {
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kernels.push_back(k->to_json());
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// check args for objects
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int i = 0;
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for (auto &a : k->args) {
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if (a.size() == 8) {
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if (saved_objects.find(a) == saved_objects.end()) {
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saved_objects.insert(a);
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cl_mem val = *(cl_mem*)(a.data());
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if (val != NULL) {
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bool needs_load = k->arg_names[i] == "weights" || k->arg_names[i] == "biases";
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auto jj = Json::object({
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{"id", a},
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{"arg_type", k->arg_types[i]},
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});
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if (k->arg_types[i] == "image2d_t" || k->arg_types[i] == "image1d_t") {
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cl_mem buf;
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clGetImageInfo(val, CL_IMAGE_BUFFER, sizeof(buf), &buf, NULL);
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string aa = string((char *)&buf, sizeof(buf));
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jj["buffer_id"] = aa;
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size_t width, height, row_pitch;
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clGetImageInfo(val, CL_IMAGE_WIDTH, sizeof(width), &width, NULL);
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clGetImageInfo(val, CL_IMAGE_HEIGHT, sizeof(height), &height, NULL);
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clGetImageInfo(val, CL_IMAGE_ROW_PITCH, sizeof(row_pitch), &row_pitch, NULL);
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jj["width"] = (int)width;
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jj["height"] = (int)height;
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jj["row_pitch"] = (int)row_pitch;
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jj["size"] = (int)(height * row_pitch);
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jj["needs_load"] = false;
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if (saved_objects.find(aa) == saved_objects.end()) {
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saved_objects.insert(aa);
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size_t sz;
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clGetMemObjectInfo(buf, CL_MEM_SIZE, sizeof(sz), &sz, NULL);
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// save the buffer
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objects.push_back(Json::object({
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{"id", aa},
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{"arg_type", "<image buffer>"},
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{"needs_load", needs_load},
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{"size", (int)sz}
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}));
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if (needs_load) assert(sz == height * row_pitch);
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}
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} else {
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size_t sz = 0;
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clGetMemObjectInfo(val, CL_MEM_SIZE, sizeof(sz), &sz, NULL);
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jj["size"] = (int)sz;
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jj["needs_load"] = needs_load;
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}
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objects.push_back(jj);
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}
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}
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}
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i++;
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}
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if (save_binaries) {
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int err;
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size_t binary_size = 0;
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err = clGetProgramInfo(k->program, CL_PROGRAM_BINARY_SIZES, sizeof(binary_size), &binary_size, NULL);
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assert(err == 0);
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assert(binary_size > 0);
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string sv(binary_size, '\x00');
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uint8_t* bufs[1] = { (uint8_t*)sv.data(), };
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err = clGetProgramInfo(k->program, CL_PROGRAM_BINARIES, sizeof(bufs), &bufs, NULL);
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assert(err == 0);
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binaries[k->name] = sv;
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} else {
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programs[k->name] = g_program_source[k->program];
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}
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}
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vector<string> saved_buffers;
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for (auto &obj : objects) {
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auto mobj = obj.object_items();
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cl_mem val = *(cl_mem*)(mobj["id"].string_value().data());
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int sz = mobj["size"].int_value();
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if (mobj["needs_load"].bool_value()) {
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char *buf = (char *)malloc(sz);
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if (mobj["arg_type"] == "image2d_t" || mobj["arg_type"] == "image1d_t") {
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assert(false);
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} else {
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// buffers allocated with CL_MEM_HOST_WRITE_ONLY, hence this hack
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//hexdump((uint32_t*)val, 0x100);
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// the worst hack in thneed, the flags are at 0x14
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((uint32_t*)val)[0x14] &= ~CL_MEM_HOST_WRITE_ONLY;
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cl_int ret = clEnqueueReadBuffer(command_queue, val, CL_TRUE, 0, sz, buf, 0, NULL, NULL);
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assert(ret == CL_SUCCESS);
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}
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//printf("saving buffer: %d %p %s\n", sz, buf, mobj["arg_type"].string_value().c_str());
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saved_buffers.push_back(string(buf, sz));
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free(buf);
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}
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}
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std::vector<Json> jbinaries;
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for (auto &obj : binaries) {
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jbinaries.push_back(Json::object({{"name", obj.first}, {"length", (int)obj.second.size()}}));
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saved_buffers.push_back(obj.second);
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}
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Json jdat = Json::object({
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{"kernels", kernels},
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{"objects", objects},
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{"programs", programs},
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{"binaries", jbinaries},
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});
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string str = jdat.dump();
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int jsz = str.length();
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FILE *f = fopen(filename, "wb");
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fwrite(&jsz, 1, sizeof(jsz), f);
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fwrite(str.data(), 1, jsz, f);
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for (auto &s : saved_buffers) {
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fwrite(s.data(), 1, s.length(), f);
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}
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fclose(f);
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}
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Json CLQueuedKernel::to_json() const {
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return Json::object {
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{ "name", name },
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{ "work_dim", (int)work_dim },
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{ "global_work_size", Json::array { (int)global_work_size[0], (int)global_work_size[1], (int)global_work_size[2] } },
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{ "local_work_size", Json::array { (int)local_work_size[0], (int)local_work_size[1], (int)local_work_size[2] } },
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{ "num_args", (int)num_args },
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{ "args", args },
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{ "args_size", args_size },
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};
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}
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