tts can now set a length limit

expose.h

@@ -214,6 +214,7 @@ struct tts_load_model_inputs
     const char * vulkan_info = nullptr;
     const int gpulayers = 0;
     const bool flash_attention = false;
+    const int ttsmaxlen = 4096;
     const bool quiet = false;
     const int debugmode = 0;
 };

ggml/src/ggml-cuda/common.cuh

@@ -46,20 +46,20 @@
 #define GGML_CUDA_CC_VOLTA      700
 #define GGML_CUDA_CC_TURING     750
 #define GGML_CUDA_CC_AMPERE     800
-#define GGML_CUDA_CC_OFFSET_AMD 1000000
+#define GGML_CUDA_CC_OFFSET_AMD 0x1000000
 
 // GCN/CNDA, wave size is 64
-#define GGML_CUDA_CC_GCN4       (GGML_CUDA_CC_OFFSET_AMD + 803)  // Tonga, Fiji, Polaris, minimum for fast fp16
+#define GGML_CUDA_CC_GCN4       (GGML_CUDA_CC_OFFSET_AMD + 0x803)  // Tonga, Fiji, Polaris, minimum for fast fp16
-#define GGML_CUDA_CC_VEGA       (GGML_CUDA_CC_OFFSET_AMD + 900)  // Vega56/64, minimum for fp16 dual issue
+#define GGML_CUDA_CC_VEGA       (GGML_CUDA_CC_OFFSET_AMD + 0x900)  // Vega56/64, minimum for fp16 dual issue
-#define GGML_CUDA_CC_VEGA20     (GGML_CUDA_CC_OFFSET_AMD + 906)  // MI50/Radeon VII, minimum for dp4a
+#define GGML_CUDA_CC_VEGA20     (GGML_CUDA_CC_OFFSET_AMD + 0x906)  // MI50/Radeon VII, minimum for dp4a
-#define GGML_CUDA_CC_CDNA       (GGML_CUDA_CC_OFFSET_AMD + 908)  // MI100, minimum for MFMA, acc registers
+#define GGML_CUDA_CC_CDNA       (GGML_CUDA_CC_OFFSET_AMD + 0x908)  // MI100, minimum for MFMA, acc registers
-#define GGML_CUDA_CC_CDNA2      (GGML_CUDA_CC_OFFSET_AMD + 910)  // MI210, minimum acc register renameing
+#define GGML_CUDA_CC_CDNA2      (GGML_CUDA_CC_OFFSET_AMD + 0x910)  // MI210, minimum acc register renameing
-#define GGML_CUDA_CC_CDNA3      (GGML_CUDA_CC_OFFSET_AMD + 942)  // MI300
+#define GGML_CUDA_CC_CDNA3      (GGML_CUDA_CC_OFFSET_AMD + 0x942)  // MI300
 
 // RNDA removes MFMA, dp4a, xnack, acc registers, wave size is 32
-#define GGML_CUDA_CC_RDNA1      (GGML_CUDA_CC_OFFSET_AMD + 1010) // RX 5000
+#define GGML_CUDA_CC_RDNA1      (GGML_CUDA_CC_OFFSET_AMD + 0x1010) // RX 5000
-#define GGML_CUDA_CC_RDNA2      (GGML_CUDA_CC_OFFSET_AMD + 1030) // RX 6000, minimum for dp4a
+#define GGML_CUDA_CC_RDNA2      (GGML_CUDA_CC_OFFSET_AMD + 0x1030) // RX 6000, minimum for dp4a
-#define GGML_CUDA_CC_RDNA3      (GGML_CUDA_CC_OFFSET_AMD + 1100) // RX 7000, minimum for WMMA
+#define GGML_CUDA_CC_RDNA3      (GGML_CUDA_CC_OFFSET_AMD + 0x1100) // RX 7000, minimum for WMMA
 
 #define GGML_CUDA_CC_QY1        210
 #define GGML_CUDA_CC_QY2        220

ggml/src/ggml-cuda/ggml-cuda.cu

@@ -121,6 +121,55 @@ static cudaError_t ggml_cuda_device_malloc(void ** ptr, size_t size, int device)
 #endif
 }
 
+#if defined(GGML_USE_HIP) && defined(__HIP_PLATFORM_AMD__)
+static int ggml_cuda_parse_id(char devName[]) {
+    // A list of possible Target IDs can be found under the rocclr/clr repo in device.cpp
+    // these values are not stable so this is susceptible to breakage
+    // https://github.com/ROCm/clr/blob/amd-staging/rocclr/device/device.cpp
+    int archMajor = 0x0;
+    int archMinor = 0x0;
+    int archNum = GGML_CUDA_CC_OFFSET_AMD;
+    int archLen = strlen(devName);
+    char archName[archLen + 1];
+
+    // strip leading 'gfx' while copying into our buffer
+    if (archLen > 3) {
+        strcpy(archName, &devName[3]);
+        archLen -= 3;
+    }
+
+    // trim trailing :xnack- or :sramecc- statuses
+    archLen = strcspn(archName, ":");
+    archName[archLen] = '\0';
+
+    // tease out the version information
+    if (archLen > 8) {
+        // versions labeled generic use '-' as delimiter
+        // strip the trailing "-generic" then iterate through what remains
+        if ((strstr(archName, "-generic"))) {
+            archName[archLen - 8] = '\0';
+            char * pch;
+            if ((pch = strtok(archName, "-"))) {
+                archMajor = (int)strtoul(pch, 0, 16);
+                if ((pch = strtok(NULL, "-"))) {
+                    archMinor = 0x10 * (int)strtoul(pch, 0, 16);
+                }
+            }
+        }
+    } else if (archLen >= 3) {
+        // last two digits should be the minor * 0x10 + stepping
+        archMinor = (int)strtoul(&archName[archLen - 2], 0, 16);
+        archName[archLen - 2] = '\0';
+
+        // only the major version remains
+        archMajor = (int)strtoul(archName, 0, 16);
+    }
+    archNum += archMajor * 0x100;
+    archNum += archMinor;
+    return archNum;
+}
+#endif // defined(GGML_USE_HIP) && defined(__HIP_PLATFORM_AMD__)
+
 static ggml_cuda_device_info ggml_cuda_init() {
 #ifdef __HIP_PLATFORM_AMD__
     // Workaround for a rocBLAS bug when using multiple graphics cards:
@@ -172,7 +221,6 @@ static ggml_cuda_device_info ggml_cuda_init() {
 
         cudaDeviceProp prop;
         CUDA_CHECK(cudaGetDeviceProperties(&prop, id));
-        GGML_LOG_INFO("  Device %d: %s, compute capability %d.%d, VMM: %s\n", id, prop.name, prop.major, prop.minor, device_vmm ? "yes" : "no");
 
         info.default_tensor_split[id] = total_vram;
         total_vram += prop.totalGlobalMem;
@@ -181,10 +229,25 @@ static ggml_cuda_device_info ggml_cuda_init() {
         info.devices[id].smpb  = prop.sharedMemPerBlock;
 #if defined(GGML_USE_HIP) && defined(__HIP_PLATFORM_AMD__)
         info.devices[id].smpbo = prop.sharedMemPerBlock;
-        info.devices[id].cc = 100*prop.major + 10*prop.minor + GGML_CUDA_CC_OFFSET_AMD;
+
+        info.devices[id].cc = ggml_cuda_parse_id(prop.gcnArchName);
+        if ((info.devices[id].cc & 0xff00) == 0x0) {
+            GGML_LOG_WARN("invalid architecture ID received for device %d %s: %s  cc %d.%d\n",
+                            id, prop.name, prop.gcnArchName, prop.major, prop.minor);
+
+            // Fallback to prop.major and prop.minor
+            if (prop.major > 0) {
+                info.devices[id].cc = GGML_CUDA_CC_OFFSET_AMD + prop.major * 0x100;
+                info.devices[id].cc += prop.minor * 0x10;
+            }
+        }
+        GGML_LOG_INFO("  Device %d: %s, %s (0x%x), VMM: %s\n",
+                        id, prop.name, prop.gcnArchName, info.devices[id].cc & 0xffff, device_vmm ? "yes" : "no");
 #else
         info.devices[id].smpbo = prop.sharedMemPerBlockOptin;
         info.devices[id].cc = 100*prop.major + 10*prop.minor;
+        GGML_LOG_INFO("  Device %d: %s, compute capability %d.%d, VMM: %s\n",
+                        id, prop.name, prop.major, prop.minor, device_vmm ? "yes" : "no");
 #endif // defined(GGML_USE_HIP) && defined(__HIP_PLATFORM_AMD__)
     }
 

koboldcpp.py

@@ -291,6 +291,7 @@ class tts_load_model_inputs(ctypes.Structure):
                 ("vulkan_info", ctypes.c_char_p),
                 ("gpulayers", ctypes.c_int),
                 ("flash_attention", ctypes.c_bool),
+                ("ttsmaxlen", ctypes.c_int),
                 ("quiet", ctypes.c_bool),
                 ("debugmode", ctypes.c_int)]
 
@@ -1451,6 +1452,7 @@ def tts_load_model(ttc_model_filename,cts_model_filename):
         if ttst > 0:
             thds = ttst
     inputs.threads = thds
+    inputs.ttsmaxlen = args.ttsmaxlen if args.ttsmaxlen < 4096 else 4096
     inputs = set_backend_props(inputs)
     ret = handle.tts_load_model(inputs)
     return ret
@@ -3279,6 +3281,7 @@ def show_gui():
     wavtokenizer_var = ctk.StringVar()
     ttsgpu_var = ctk.IntVar(value=0)
     tts_threads_var = ctk.StringVar(value=str(default_threads))
+    ttsmaxlen_var = ctk.StringVar(value=str(4096))
 
     def tabbuttonaction(name):
         for t in tabcontent:
@@ -3855,6 +3858,7 @@ def show_gui():
     makefileentry(audio_tab, "WavTokenizer Model (Text-To-Speech):", "Select WavTokenizer GGUF Model File", wavtokenizer_var, 7, width=280, filetypes=[("*.gguf","*.gguf")], tooltiptxt="Select a WavTokenizer GGUF model file on disk to be loaded for Narration.")
     wavtokenizer_var.trace("w", gui_changed_modelfile)
     makecheckbox(audio_tab, "TTS Use GPU", ttsgpu_var, 9, 0,tooltiptxt="Uses the GPU for TTS.")
+    makelabelentry(audio_tab, "OuteTTS Max Tokens:" , ttsmaxlen_var, 11, 50,padx=290,singleline=True,tooltip="Max allowed audiotokens to generate per TTS request.")
     ttsgpu_var.trace("w", gui_changed_modelfile)
 
     def kcpp_export_template():
@@ -4077,6 +4081,7 @@ def show_gui():
             args.ttsmodel = tts_model_var.get()
             args.ttswavtokenizer = wavtokenizer_var.get()
             args.ttsgpu = (ttsgpu_var.get()==1)
+            args.ttsmaxlen = int(ttsmaxlen_var.get())
 
     def import_vars(dict):
         global importvars_in_progress
@@ -4242,6 +4247,7 @@ def show_gui():
         tts_model_var.set(dict["ttsmodel"] if ("ttsmodel" in dict and dict["ttsmodel"]) else "")
         wavtokenizer_var.set(dict["ttswavtokenizer"] if ("ttswavtokenizer" in dict and dict["ttswavtokenizer"]) else "")
         ttsgpu_var.set(dict["ttsgpu"] if ("ttsgpu" in dict) else 0)
+        ttsmaxlen_var.set(str(dict["ttsmaxlen"]) if ("ttsmaxlen" in dict and dict["ttsmaxlen"]) else str(4096))
 
         importvars_in_progress = False
         gui_changed_modelfile()
@@ -5646,6 +5652,7 @@ if __name__ == '__main__':
     ttsparsergroup.add_argument("--ttsmodel", metavar=('[filename]'), help="Specify the OuteTTS Text-To-Speech GGUF model.", default="")
     ttsparsergroup.add_argument("--ttswavtokenizer", metavar=('[filename]'), help="Specify the WavTokenizer GGUF model.", default="")
     ttsparsergroup.add_argument("--ttsgpu", help="Use the GPU for TTS.", action='store_true')
+    ttsparsergroup.add_argument("--ttsmaxlen", help="Limit number of audio tokens generated with TTS.",  type=int, default=4096)
     ttsparsergroup.add_argument("--ttsthreads", metavar=('[threads]'), help="Use a different number of threads for TTS if specified. Otherwise, has the same value as --threads.", type=int, default=0)
 
     deprecatedgroup = parser.add_argument_group('Deprecated Commands, DO NOT USE!')

otherarch/tts_adapter.cpp

@@ -478,6 +478,7 @@ static int cts_offset = 151672;
 static int space_id = 151670;
 static int code_terminate_id = 151670;
 static int nthreads = 4;
+static int tts_max_len = 4096;
 
 bool ttstype_load_model(const tts_load_model_inputs inputs)
 {
@@ -522,6 +523,8 @@ bool ttstype_load_model(const tts_load_model_inputs inputs)
 
     nthreads = inputs.threads;
 
+    tts_max_len = inputs.ttsmaxlen;
+
     tts_model_params.use_mmap = false;
     tts_model_params.use_mlock = false;
     tts_model_params.n_gpu_layers = inputs.gpulayers; //offload if possible
@@ -871,7 +874,7 @@ tts_generation_outputs ttstype_generate(const tts_generation_inputs inputs)
 
     // main loop
     n_decode = 0;
-    n_predict = 4096; //max 4096 tokens
+    n_predict = tts_max_len; //max 4096 tokens
 
     while (n_decode <= n_predict)
     {

src/llama-model-loader.cpp

@@ -824,7 +824,7 @@ void llama_model_loader::init_mappings(bool prefetch, llama_mlocks * mlock_mmaps
         for (const auto & file : files) {
             auto * reg = ggml_backend_dev_backend_reg(ggml_backend_dev_by_type(GGML_BACKEND_DEVICE_TYPE_CPU));
             auto * is_numa_fn = (decltype(ggml_is_numa) *) ggml_backend_reg_get_proc_address(reg, "ggml_backend_cpu_is_numa");
-            std::unique_ptr<llama_mmap> mapping(new llama_mmap(file.get(), prefetch ? -1 : 0, is_numa_fn()));
+            std::unique_ptr<llama_mmap> mapping = std::make_unique<llama_mmap>(file.get(), prefetch ? -1 : 0, is_numa_fn());
             mmaps_used.emplace_back(mapping->size(), 0);
             if (mlock_mmaps) {
                 std::unique_ptr<llama_mlock> mlock_mmap(new llama_mlock());

src/llama-vocab.cpp

@@ -1470,8 +1470,13 @@ struct llama_vocab::impl {
 
     std::vector<llama_token> cache_special_tokens;
     std::vector<std::string> cache_token_to_piece; // llama_token_to_piece(special = true);
-
+    struct pair_hash {
-    std::map<std::pair<std::string, std::string>, int> bpe_ranks;
+        size_t operator()(const std::pair<std::string, std::string> & p) const {
+            return std::hash<std::string>{}(p.first) ^  //create some hash for pair
+                   (std::hash<std::string>{}(p.second) << 1);
+        }
+    };
+    std::unordered_map<std::pair<std::string, std::string>, int, pair_hash> bpe_ranks;
 
     // set of all tokens that cause "end of generation"
     std::set<llama_token> special_eog_ids;

src/llama.cpp

@@ -8468,74 +8468,33 @@ static enum ggml_status llama_graph_compute(
     return status;
 }
 
-// decode a batch of tokens by evaluating the transformer
+static int llama_prepare_sbatch(
-// in case of unsuccessful decoding (error or warning),
-// the kv_cache state will be returned to its original state
-// (for non-recurrent models) or cleaned (for recurrent models)
-//
-//   - lctx:      llama context
-//   - batch:     batch to evaluate
-//
-// return 0 on success
-// return positive int on warning
-// return negative int on error
-//
-static int llama_decode_impl(
         llama_context     & lctx,
-           llama_batch   inp_batch) {
+        const llama_batch & batch,
-
+        uint32_t          & n_outputs) {
-    lctx.is_encoding = false;
-
-    if (inp_batch.n_tokens == 0) {
-        LLAMA_LOG_ERROR("%s: n_tokens == 0\n", __func__);
-        return -1;
-    }
-
-    // temporary allocate memory for the input batch if needed
-    llama_batch_allocr batch_allocr(inp_batch, inp_batch.pos ? -1 : lctx.kv_self.max_pos() + 1);
-
-    const llama_batch & batch = batch_allocr.batch;
-    const uint32_t n_tokens_all = batch.n_tokens;
-
     const auto & model   = lctx.model;
-    const auto & vocab   = model.vocab;
     const auto & hparams = model.hparams;
     const auto & cparams = lctx.cparams;
 
-    GGML_ASSERT((!batch.token && batch.embd) || (batch.token && !batch.embd)); // NOLINT
+    const uint32_t n_tokens_all = batch.n_tokens;
+    const  int64_t n_embd       = hparams.n_embd;
 
+    // this indicates we are doing pooled embedding, so we ignore batch.logits and output all tokens
+    const bool embd_pooled = cparams.embeddings && cparams.pooling_type != LLAMA_POOLING_TYPE_NONE;
+
+    GGML_ASSERT((!batch.token && batch.embd) || (batch.token && !batch.embd)); // NOLINT
     if (batch.token) {
         for (uint32_t i = 0; i < n_tokens_all; ++i) {
-            if (batch.token[i] < 0 || (uint32_t) batch.token[i] >= model.vocab.n_tokens()) {
+            if (batch.token[i] < 0 || uint32_t(batch.token[i]) >= model.vocab.n_tokens()) {
                 LLAMA_LOG_ERROR("%s: invalid token[%d] = %d\n", __func__, i, batch.token[i]);
                 return -1;
             }
         }
     }
-
     GGML_ASSERT_CONTINUE(n_tokens_all <= cparams.n_batch);
-
     //GGML_ASSERT_CONTINUE((cparams.causal_attn || cparams.n_ubatch >= n_tokens_all) && "non-causal attention requires n_ubatch >= n_tokens");
 
-    if (lctx.t_compute_start_us == 0) {
-        lctx.t_compute_start_us = ggml_time_us();
-    }
     lctx.n_queued_tokens += n_tokens_all;
-
-    auto & kv_self = lctx.kv_self;
-    llama_kv_slot_restorer kv_slot_restorer(kv_self);
-
-    const int64_t n_embd  = hparams.n_embd;
-    const int64_t n_vocab = vocab.n_tokens();
-
-    uint32_t n_outputs = 0;
-    uint32_t n_outputs_prev = 0;
-
-    const auto n_ubatch = cparams.n_ubatch;
-
-    // this indicates we are doing pooled embedding, so we ignore batch.logits and output all tokens
-    const bool embd_pooled = cparams.embeddings && cparams.pooling_type != LLAMA_POOLING_TYPE_NONE;
-
     lctx.embd_seq.clear();
 
     // count outputs
@@ -8551,7 +8510,7 @@ static int llama_decode_impl(
     }
 
     lctx.sbatch.from_batch(batch, n_embd,
-        /* simple_split */ !kv_self.recurrent,
+        /* simple_split */ !lctx.kv_self.recurrent,
         /* logits_all   */ n_outputs == n_tokens_all);
 
     // reserve output buffer
@@ -8560,32 +8519,47 @@ static int llama_decode_impl(
         return -2;
     };
 
-    while (lctx.sbatch.n_tokens > 0) {
+    return 0;
-        llama_ubatch ubatch;
+}
-        if (kv_self.recurrent) {
+
+static int llama_prepare_ubatch(
+        llama_context          & lctx,
+        llama_kv_slot_restorer & kv_slot_restorer,
+        llama_ubatch           & ubatch,
+        const uint32_t           n_outputs,
+        const uint32_t           n_tokens_all) {
+    GGML_ASSERT(lctx.sbatch.n_tokens > 0);
+
+    auto       & kv_self = lctx.kv_self;
+    const auto & cparams = lctx.cparams;
+    const auto & hparams = lctx.model.hparams;
+
+    // this indicates we are doing pooled embedding, so we ignore batch.logits and output all tokens
+    const bool embd_pooled = cparams.embeddings && cparams.pooling_type != LLAMA_POOLING_TYPE_NONE;
+
+    if (lctx.kv_self.recurrent) {
         if (embd_pooled) {
             // Pooled embeddings cannot be split across ubatches (yet)
-                ubatch = lctx.sbatch.split_seq(n_ubatch);
+            ubatch = lctx.sbatch.split_seq(cparams.n_ubatch);
         } else {
             // recurrent model architectures are easier to implement
             // with equal-length sequences
-                ubatch = lctx.sbatch.split_equal(n_ubatch);
+            ubatch = lctx.sbatch.split_equal(cparams.n_ubatch);
         }
     } else {
-            ubatch = lctx.sbatch.split_simple(n_ubatch);
+        ubatch = lctx.sbatch.split_simple(cparams.n_ubatch);
     }
-        const uint32_t n_tokens = ubatch.n_tokens;
 
     // count the outputs in this u_batch
     {
         int32_t n_outputs_new = 0;
 
         if (n_outputs == n_tokens_all) {
-                n_outputs_new = n_tokens;
+            n_outputs_new = ubatch.n_tokens;
         } else {
             GGML_ASSERT(ubatch.output);
-                for (uint32_t i = 0; i < n_tokens; i++) {
+            for (uint32_t i = 0; i < ubatch.n_tokens; i++) {
-                    n_outputs_new += (int32_t) (ubatch.output[i] != 0);
+                n_outputs_new += int32_t(ubatch.output[i] != 0);
             }
         }
 
@@ -8593,18 +8567,13 @@ static int llama_decode_impl(
         lctx.n_outputs = n_outputs_new;
     }
 
-        int n_threads = (n_tokens < 32) ? cparams.n_threads : cparams.n_threads_batch;
-        ggml_threadpool_t threadpool = n_tokens == 1 ? lctx.threadpool : lctx.threadpool_batch;
-
-        GGML_ASSERT(n_threads > 0);
-
     // non-causal masks do not use the KV cache
     if (hparams.causal_attn) {
         llama_kv_cache_update(&lctx);
 
         // if we have enough unused cells before the current head ->
         //   better to start searching from the beginning of the cache, hoping to fill it
-            if (kv_self.head > kv_self.used + 2*n_tokens) {
+        if (kv_self.head > kv_self.used + 2*ubatch.n_tokens) {
             kv_self.head = 0;
         }
 
@@ -8624,6 +8593,74 @@ static int llama_decode_impl(
         }
     }
 
+    return 0;
+}
+
+// decode a batch of tokens by evaluating the transformer
+// in case of unsuccessful decoding (error or warning),
+// the kv_cache state will be returned to its original state
+// (for non-recurrent models) or cleaned (for recurrent models)
+//
+//   - lctx:      llama context
+//   - inp_batch: batch to evaluate
+//
+// return 0 on success
+// return positive int on warning
+// return negative int on error
+//
+static int llama_decode_impl(
+         llama_context & lctx,
+           llama_batch   inp_batch) {
+
+    lctx.is_encoding = false;
+
+    if (inp_batch.n_tokens == 0) {
+        LLAMA_LOG_ERROR("%s: n_tokens == 0\n", __func__);
+        return -1;
+    }
+
+    // temporarily allocate memory for the input batch if needed
+    llama_batch_allocr batch_allocr(inp_batch, inp_batch.pos ? -1 : lctx.kv_self.max_pos() + 1);
+    const llama_batch & batch = batch_allocr.batch;
+
+    const auto & model   = lctx.model;
+    const auto & vocab   = model.vocab;
+    const auto & hparams = model.hparams;
+    const auto & cparams = lctx.cparams;
+
+    if (lctx.t_compute_start_us == 0) {
+        lctx.t_compute_start_us = ggml_time_us();
+    }
+    auto & kv_self = lctx.kv_self;
+    llama_kv_slot_restorer kv_slot_restorer(kv_self);
+
+    const int64_t n_embd  = hparams.n_embd;
+    const int64_t n_vocab = vocab.n_tokens();
+
+    uint32_t n_outputs = 0;
+    uint32_t n_outputs_prev = 0;
+
+    {
+        const int ret = llama_prepare_sbatch(lctx, batch, n_outputs);
+        if (ret != 0) {
+            return ret;
+        }
+    }
+
+    while (lctx.sbatch.n_tokens > 0) {
+        llama_ubatch ubatch;
+        {
+            const int ret = llama_prepare_ubatch(lctx, kv_slot_restorer, ubatch, n_outputs, batch.n_tokens);
+            if (ret != 0) {
+                return ret;
+            }
+        }
+
+        const int         n_threads  = ubatch.n_tokens < 32 ? cparams.n_threads : cparams.n_threads_batch;
+        ggml_threadpool_t threadpool = ubatch.n_tokens < 32 ? lctx.threadpool   : lctx.threadpool_batch;
+
+        GGML_ASSERT(n_threads > 0);
+
         //printf("kv_self.n = %5d, kv_self.used = %5d, kv_self.head = %5d\n", kv_self.n, kv_self.used, kv_self.head);
 
         ggml_backend_sched_reset(lctx.sched.get());
@@ -8676,7 +8713,7 @@ static int llama_decode_impl(
 
         // update the kv ring buffer
         {
-            kv_self.head += n_tokens;
+            kv_self.head += ubatch.n_tokens;
 
             // Ensure kv cache head points to a valid index.
             if (kv_self.head >= kv_self.size) {