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.TH GGUF_TO_NVFP4_GGUF 1 "November 2026" "nvfp4_gguf_quant" "User Commands"
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.SH NAME
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gguf_to_nvfp4_gguf \- quantize or repack an existing GGUF model to NVFP4 GGUF
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.SH SYNOPSIS
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.B gguf_to_nvfp4_gguf
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[\fB\-o\fR \fIOUTPUT\fR]
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[\fB\-\-modelfile\-only\fR]
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[\fB\-\-overwrite\fR]
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[\fB\-\-mmproj\fR \fIMMPROJ\fR]
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[\fB\-\-context\-length\fR \fILEN\fR]
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[\fB\-\-no\-quant\fR]
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[\fB\-\-outtype\fR \fITYPE\fR]
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[\fB\-\-llama\-cpp\fR \fIPATH\fR]
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[\fB\-\-convert\-to\-quant\fR \fIPATH\fR]
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[\fB\-\-model\-name\fR \fINAME\fR]
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[\fB\-\-device\fR \fIDEVICE\fR]
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[\fB\-\-simple\fR]
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[\fB\-\-optimizer\fR \fIOPT\fR]
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[\fB\-\-num\-iter\fR \fIN\fR]
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[\fB\-\-lr\fR \fILR\fR]
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[\fB\-\-lr\-patience\fR \fIN\fR]
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[\fB\-\-lr\-min\fR \fIMIN\fR]
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[\fB\-\-lr\-schedule\fR \fISCHED\fR]
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[\fB\-\-scale\-optimization\fR \fIMODE\fR]
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[\fB\-\-scale\-refinement\-rounds\fR \fIN\fR]
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[\fB\-\-full\-matrix\fR]
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[\fB\-\-top\-p\fR \fIP\fR]
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[\fB\-\-min\-k\fR \fIK\fR]
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[\fB\-\-max\-k\fR \fIK\fR]
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[\fB\-\-early\-stop\-loss\fR \fILOSS\fR]
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[\fB\-\-early\-stop\-stall\fR \fISTALL\fR]
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[\fB\-\-target\-loss\fR \fITARGET\fR]
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[\fB\-\-early\-stop\-floor\-stall\fR \fIFLOOR\fR]
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[\fB\-\-calib\-samples\fR \fISAMPLES\fR]
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[\fB\-\-seed\fR \fISEED\fR]
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[\fB\-\-no\-bias\-correction\fR]
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[\fB\-\-quantize\-output\fR]
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[\fB\-\-exclude\fR \fIREGEX\fR]
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[\fB\-\-checkpoint\-dir\fR \fIDIR\fR]
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[\fB\-\-fresh\fR]
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[\fB\-\-keep\-checkpoints\fR]
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[\fB\-\-eager\fR]
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[\fB\-\-no\-temp\-file\fR]
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[\fB\-\-verbose\fR]
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[\fB\-\-self\-test\fR]
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[\fB\-h\fR|\fB\-\-help\fR]
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\fIgguf\fR
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.SH DESCRIPTION
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.B gguf_to_nvfp4_gguf
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reads an existing GGUF model (such as an F16, BF16, or existing quantized checkpoint)
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and converts it to NVIDIA FP4 (NVFP4) format, or repacks an existing NVFP4 GGUF file.
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.PP
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Vocabulary, tokenizer settings, architecture metadata, and tensor names are copied directly
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from the source GGUF header. When quantizing unquantized (float) tensors, learned rounding
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or simple grid rounding is applied using the same optimization flags as \fBhf_to_nvfp4_gguf\fR.
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.PP
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An accompanying Ollama \fBModelfile\fR is written alongside the output GGUF, configured with
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the source model's parameters and templates.
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.SH POSITIONAL ARGUMENTS
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.TP
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.I gguf
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Input GGUF file path.
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.SH OPTIONS
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.SS Output & File Control
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.TP
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.BI \-o " " OUTPUT ", " \-\-output " " OUTPUT
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Output directory (default: \fI./<name>-NVFP4\fR, or \fI./<name>\fR with \fB\-\-no\-quant\fR and \fBauto\fR).
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If ending in \fI.gguf\fR, specifies the destination file directly.
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.TP
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.B \-\-overwrite
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Overwrite existing output GGUF, Modelfile, or copied projector without prompting.
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.TP
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.B \-\-modelfile\-only
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Write the Ollama Modelfile and skip quantization and GGUF generation.
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.TP
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.BI \-\-mmproj " " MMPROJ
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Path to a vision projector GGUF to bundle into the output directory and add as another \fBFROM\fR layer.
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May be repeated for multi-modal models.
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.TP
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.BI \-\-context\-length " " LEN
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Override maximum context length stored in the GGUF metadata.
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.TP
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.BI \-\-model\-name " " NAME
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Override the model name stored in the GGUF metadata.
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.SS Quantization Mode
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.TP
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.B \-\-no\-quant
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Skip learned rounding. Writes a float GGUF, or copies/repacks an existing NVFP4 GGUF when combined with \fB\-\-outtype nvfp4\fR.
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.TP
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.BI \-\-outtype " " {auto,f32,f16,bf16,nvfp4}
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Target data type when learned rounding is skipped. \fBnvfp4\fR copies an already NVFP4 GGUF without re-optimizing;
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\fBauto\fR leaves tensors as stored in the source file (default: \fBauto\fR).
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.TP
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.B \-\-simple
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Round each value directly onto the E2M1 grid without learned rounding (fast, non-iterative).
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.TP
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.B \-\-quantize\-output
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Also quantize the output (\fIlm_head\fR) matrix. By default, output projection layers are left unquantized.
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.TP
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.BI \-\-exclude " " REGEX
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Regular expression matching GGUF tensor names that should remain in their source precision.
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.SS Optimization & Learned Rounding
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.TP
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.BI \-\-optimizer " " {auto,prodigy,adamw,radam,original}
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Learned-rounding optimization algorithm (default: \fBauto\fR; selects Prodigy if available, else AdamW).
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.TP
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.BI \-\-num\-iter " " N
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Learned-rounding optimization iterations per matrix (default: 4000).
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.TP
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.BI \-\-lr " " LR
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Initial learning rate (default: 1.0).
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.TP
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.BI \-\-lr\-patience " " N
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Patience steps before decaying the learning rate (default: 5).
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.TP
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.BI \-\-lr\-min " " MIN
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Lowest learning rate floor (default: 1e-8).
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.TP
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.BI \-\-lr\-schedule " " {plateau,exponential,adaptive}
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Learning rate decay schedule (default: \fBplateau\fR).
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.TP
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.BI \-\-scale\-optimization " " {fixed,iterative,joint}
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Block scale tuning strategy: \fBfixed\fR, \fBiterative\fR, or \fBjoint\fR (default: \fBjoint\fR).
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.TP
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.BI \-\-scale\-refinement\-rounds " " N
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Scale refresh iterations when using \fBiterative\fR scale optimization (default: 2).
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.TP
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.B \-\-full\-matrix
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Use full SVD instead of low-rank SVD for reconstruction objective.
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.TP
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.BI \-\-top\-p " " P ", " \-\-min\-k " " K ", " \-\-max\-k " " K
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Singular value decomposition rank selection bounds.
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.TP
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.BI \-\-target\-loss " " TARGET
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Target reconstruction loss threshold for early exit (default: 1e-5; 0 disables).
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.TP
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.BI \-\-early\-stop\-stall " " STALL
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Early stop threshold in steps without loss reduction (default: 2000).
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.TP
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.BI \-\-early\-stop\-floor\-stall " " FLOOR
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Steps without improvement after reaching \fB\-\-lr\-min\fR before terminating matrix search (default: 64; 0 disables).
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.TP
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.BI \-\-calib\-samples " " SAMPLES
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Random calibration vectors used for sibling bias correction (default: 3072).
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.TP
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.BI \-\-seed " " SEED
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Random seed (default: 42).
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.TP
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.B \-\-no\-bias\-correction
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Disable sibling bias correction.
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.SS System & Execution
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.TP
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.BI \-\-device " " DEVICE
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Compute device: \fBauto\fR, \fBcpu\fR, \fBcuda\fR, or \fBcuda:N\fR (default: \fBauto\fR).
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.TP
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.BI \-\-llama\-cpp " " PATH
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Path to local llama.cpp repository checkout (default: \fI~/llama.cpp\fR).
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.TP
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.BI \-\-convert\-to\-quant " " PATH
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Path to local convert_to_quant repository checkout.
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.TP
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.BI \-\-checkpoint\-dir " " DIR
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Directory for per-tensor resume checkpoints.
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.TP
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.B \-\-fresh
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Delete checkpoint directory before starting.
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.TP
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.B \-\-keep\-checkpoints
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Keep per-tensor checkpoints on disk after completion.
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.TP
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.B \-\-eager
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Map and load tensors up front.
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.TP
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.B \-\-no\-temp\-file
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Keep finished GGUF tensors in RAM rather than a temporary file.
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.TP
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.B \-\-verbose
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Enable verbose logging.
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.TP
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.B \-\-self\-test
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Verify NVFP4 packing against llama.cpp dequantizer and exit.
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.SH EXAMPLES
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.TP
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.B Quantize an F16 GGUF to NVFP4:
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.RS
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.nf
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gguf_to_nvfp4_gguf -o ./llama3-nvfp4 ./llama-3-8b-f16.gguf
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.fi
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.RE
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.TP
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.B Fast conversion with simple grid rounding:
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.RS
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.nf
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gguf_to_nvfp4_gguf --simple -o ./qwen-nvfp4 ./qwen2.5-7b-bf16.gguf
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.fi
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.RE
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.TP
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.B Repack existing NVFP4 GGUF into a new directory with Modelfile:
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.RS
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.nf
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gguf_to_nvfp4_gguf --no-quant --outtype nvfp4 -o ./repacked ./model-nvfp4.gguf
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.fi
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.RE
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.SH EXIT STATUS
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.TP
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.B 0
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Success.
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.TP
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.B 1
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An error occurred during quantization or repacking.
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.SH SEE ALSO
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.BR hf_to_nvfp4_gguf (1),
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.BR safetensors_to_nvfp4_gguf (1),
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.BR gguf_info (1),
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.BR ollama_nvfp4 (1)
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