mindquantum.dtype

Data type module for MindQuantum.

Supported data type

The data type below is supported by MindQuantum when doing simulation.

mindquantum.float32	single precision real number type
mindquantum.float64	double precision real number type
mindquantum.complex64	single precision complex number type
mindquantum.complex128	double precision complex number type

Memory consuming

The memory usage for full state vector increased with qubit number is shown as below:

qubit number	complex128	complex64
6	1kB	0.5kB
16	1MB	0.5MB
26	1GB	0.5GB
30	16GB	8GB
36	1TB	0.5TB
40	16TB	8TB
46	1PB	0.5PB

Function

mindquantum.dtype.is_double_precision	Check whether a type is double precision or not.
mindquantum.dtype.is_single_precision	Check whether a type is single precision or not.
mindquantum.dtype.is_same_precision	Check whether two type is same precision or not.
mindquantum.dtype.precision_str	Get precision string.
mindquantum.dtype.to_real_type	Convert type to real type while keeping precision.
mindquantum.dtype.to_complex_type	Convert type to complex type while keeping precision.
mindquantum.dtype.to_single_precision	Convert type to single precision.
mindquantum.dtype.to_double_precision	Convert type to double precision.
mindquantum.dtype.to_precision_like	Convert dtype_src to same precision as dtype_des.
mindquantum.dtype.to_mq_type	Convert type to mindquantum type.
mindquantum.dtype.to_np_type	Convert type to numpy data type.