有两种8-bits量化技术最常见,分别是zero-point quantization和absolute maximum (absmax) quantization,他们都是把浮点数值压缩至int8(1 byte)格式。首先,他们都会通过量化因子把输入标准化。 例如,在zero-point quantization中,如果我们的量化前数值取值范围是-1.0到1.0,想要量化到-127到127之间,通过量化因子127,将...
Resolution 16Bits Sample Rate (max) 2kSPS Input Channels 8 Multi-Channel Configuration Multiplexed Integrated Features 50/60 Hz Rejection, Excitation Current Sources (iD Architecture Delta-Sigma 工作温度范围(℃) -40 to 105 Description 16-Bit 2kSPS 8-Ch ADC With PGA 可售卖地 全国 ...
其中,r表示实际值;q表示量化的比特数,比如int8量化就是8;z表示量化后的0点值。 具体的映射关系如下: 从公式中可以看到,量化的重要一点就是要确定合适的\(r_{max}\)和\(r_{min}\).对于训练好的模型就行post-training 量化来说,这点比较容易,只需要统计冻存的所有权重参数即可。 Post training quantization...
MAX_VALUE A constant holding the maximum value an int can have, 231-1. static int MIN_VALUE A constant holding the minimum value an int can have, -231. static int SIZE The number of bits used to represent an int value in two's complement binary form. static Class<Integer> TYPE ...
Here, the first bit is a sign, the next 8 bits represent an exponent, and the last bits represent the mantissa. The final value is calculated using the formula: Floating point calculation, SourceWikipedia This simple helper function allows us to print a floating point value in binary for...
bnb_config = BitsAndBytesConfig( load_in_8bit=True, bnb_4bit_use_double_quant=True, bnb_4bit_quant_type="nf4", bnb_4bit_compute_dtype=torch.bfloat16 ) model config: config = AutoConfig.from_pretrained( 'mosaicml/mpt-7b-instruct', trust_remote_code=True ) config.update({"max_seq_...
FP4和NF4类型都在bitsandbytes库中有相应的实现。作为一个例子,让我们将[1.0,2.0,3.0,4.0]数组转换为FP4: from bitsandbytes import functional as bf def print_uint(val: int, n_digits=8) -> str:""" Convert 42 => '00101010' """return forma...
Note:Now bitsandbytes is optional. Please install any version of bitsandbytes as needed. Installation instructions are in the following section. Answers to accelerate config: - This machine - No distributed training - NO - NO - NO - all - fp16 ...
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FP4和NF4类型都在bitsandbytes库中有相应的实现。作为一个例子,让我们将[1.0,2.0,3.0,4.0]数组转换为FP4: 代码语言:javascript 复制 from bitsandbytesimportfunctionalasbf defprint_uint(val:int,n_digits=8)->str:""" Convert 42 => '00101010' """returnformat(val,'b').zfill(n_digits)device=torch...