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kv-cache : log (debug) all streams in find_slot #15176

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Aug 11, 2025
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kv-cache : log (debug) all streams in find_slot #15176

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102 changes: 53 additions & 49 deletions src/llama-kv-cache-unified.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -738,66 +738,70 @@ bool llama_kv_cache_unified::update(llama_context * lctx, bool do_shift, const d
}

llama_kv_cache_unified::slot_info llama_kv_cache_unified::find_slot(const llama_ubatch & ubatch, bool cont) const {
if (debug > 0) {
const auto & cells = v_cells[seq_to_stream[1]];

const uint32_t head_cur = v_heads[1];

LLAMA_LOG_DEBUG("%s: n = %5d, used = %5d, head = %5d, size = %5d, n_swa = %5d\n",
__func__, cells.used_max_p1(), cells.get_used(), head_cur, get_size(), n_swa);
if (debug > 0) {
for (uint32_t s = 0; s < ubatch.n_seqs_unq; ++s) {
const auto seq_id = ubatch.seq_id_unq[s];
const auto stream_id = seq_to_stream[seq_id];
const auto & cells = v_cells[stream_id];
const uint32_t head_cur = v_heads[stream_id];

LLAMA_LOG_DEBUG("%s: stream[%d], n = %5d, used = %5d, head = %5d, size = %5d, n_swa = %5d\n",
__func__, stream_id, cells.used_max_p1(), cells.get_used(), head_cur, get_size(), n_swa);

if ((debug == 2 && n_swa > 0) || debug > 2) {
std::string ss;
for (uint32_t i = 0; i < cells.size(); ++i) {
if (cells.is_empty(i)) {
ss += '.';
} else {
assert(cells.seq_count(i) >= 1);

if ((debug == 2 && n_swa > 0) || debug > 2) {
std::string ss;
for (uint32_t i = 0; i < cells.size(); ++i) {
if (cells.is_empty(i)) {
ss += '.';
} else {
assert(cells.seq_count(i) >= 1);
if (cells.seq_count(i) == 1) {
ss += std::to_string(cells.seq_get(i));
} else {
ss += 'M';
}
}
if (i%256 == 255) {
ss += " *";
ss += '\n';
}
}
LLAMA_LOG_DEBUG("\n%s\n", ss.c_str());
}

if (cells.seq_count(i) == 1) {
ss += std::to_string(cells.seq_get(i));
if ((debug == 2 && n_swa > 0) || debug > 2) {
std::string ss;
for (uint32_t i = 0; i < cells.size(); ++i) {
std::string cur;
if (cells.is_empty(i)) {
cur = '.';
} else {
ss += 'M';
cur = std::to_string(cells.pos_get(i));
}
const int n = cur.size();
for (int j = 0; j < 5 - n; ++j) {
cur += ' ';
}
ss += cur;
if (i%256 == 255) {
ss += " *";
}
if (i%64 == 63) {
ss += '\n';
}
}
if (i%256 == 255) {
ss += " *";
ss += '\n';
}
LLAMA_LOG_DEBUG("\n%s\n", ss.c_str());
}
LLAMA_LOG_DEBUG("\n%s\n", ss.c_str());
}

if ((debug == 2 && n_swa > 0) || debug > 2) {
std::string ss;
for (uint32_t i = 0; i < cells.size(); ++i) {
std::string cur;
if (cells.is_empty(i)) {
cur = '.';
} else {
cur = std::to_string(cells.pos_get(i));
}
const int n = cur.size();
for (int j = 0; j < 5 - n; ++j) {
cur += ' ';
}
ss += cur;
if (i%256 == 255) {
ss += " *";
}
if (i%64 == 63) {
ss += '\n';
for (int s = 0; s < LLAMA_MAX_SEQ; ++s) {
if (cells.seq_pos_min(s) < 0) {
continue;
}
}
LLAMA_LOG_DEBUG("\n%s\n", ss.c_str());
}

for (int s = 0; s < LLAMA_MAX_SEQ; ++s) {
if (cells.seq_pos_min(s) < 0) {
continue;
LLAMA_LOG_DEBUG("%s: stream[%d] min[%d] = %5d, max[%d] = %5d\n", __func__, stream_id, s, cells.seq_pos_min(s), s, cells.seq_pos_max(s));
}

LLAMA_LOG_DEBUG("%s: min[%d] = %5d, max[%d] = %5d\n", __func__, s, cells.seq_pos_min(s), s, cells.seq_pos_max(s));
}
}

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