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ggml-rpc: chunk send()/recv() to avoid EINVAL for very large tensors over RPC (macOS & others) (#15188)

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* ggml-rpc: chunk send()/recv() to avoid EINVAL for very large tensors over RPC (macOS & others). Fixes #15055

* ggml-rpc: rename RPC_IO_CHUNK->MAX_CHUNK_SIZE, use std::min() for cap, switch to GGML_LOG_ERROR, handle 0-length send/recv

* rpc: drop n==0 special case in send_data(); retry in loop per review

* rpc: remove trailing whitespace in send_data()

---------

Co-authored-by: Shinnosuke Takagi <nosuke@nosukenoMacBook-Pro.local>
This commit is contained in:
Tak-RS
2025-08-13 14:54:30 +09:00
committed by GitHub
parent b0493156fa
commit e71d48e326
1 changed files with 18 additions and 5 deletions
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23
ggml/src/ggml-rpc/ggml-rpc.cpp
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@@ -29,9 +29,12 @@
#include <cstring>
#include <fstream>
#include <filesystem>
#include <algorithm>
namespace fs = std::filesystem;
static constexpr size_t MAX_CHUNK_SIZE = 1024ull * 1024ull * 1024ull; // 1 GiB
#ifdef _WIN32
typedef SOCKET sockfd_t;
using ssize_t = __int64;
@@ -323,11 +326,14 @@ static std::shared_ptr<socket_t> create_server_socket(const char * host, int por
static bool send_data(sockfd_t sockfd, const void * data, size_t size) {
size_t bytes_sent = 0;
while (bytes_sent < size) {
ssize_t n = send(sockfd, (const char *)data + bytes_sent, size - bytes_sent, 0);
size_t size_to_send = std::min(size - bytes_sent, MAX_CHUNK_SIZE);
ssize_t n = send(sockfd, (const char *)data + bytes_sent, size_to_send, 0);
if (n < 0) {
GGML_LOG_ERROR("send failed (bytes_sent=%zu, size_to_send=%zu)\n",
bytes_sent, size_to_send);
return false;
}
bytes_sent += n;
bytes_sent += (size_t)n;
}
return true;
}
@@ -335,11 +341,18 @@ static bool send_data(sockfd_t sockfd, const void * data, size_t size) {
static bool recv_data(sockfd_t sockfd, void * data, size_t size) {
size_t bytes_recv = 0;
while (bytes_recv < size) {
ssize_t n = recv(sockfd, (char *)data + bytes_recv, size - bytes_recv, 0);
if (n <= 0) {
size_t size_to_recv = std::min(size - bytes_recv, MAX_CHUNK_SIZE);
ssize_t n = recv(sockfd, (char *)data + bytes_recv, size_to_recv, 0);
if (n < 0) {
GGML_LOG_ERROR("recv failed (bytes_recv=%zu, size_to_recv=%zu)\n",
bytes_recv, size_to_recv);
return false;
}
bytes_recv += n;
if (n == 0) {
GGML_LOG_ERROR("recv returned 0 (peer closed?)\n");
return false;
}
bytes_recv += (size_t)n;
}
return true;
}