o
    TĆi\'  ć                   @   sL   d dl Z d dlZd dlZd dlZd dlmZ d dlmZ G dd de	Z
dS )é    N)ŚMPI)ŚCupyBackendc                   @   sL   e Zd Zdd Zdd Zdd Zdd Zd	d
 Zdd Zde	j
fddZdS )Ś
MpiBackendc                 C   s2   t j| _| j ” | _| j ” | _|| _t | _	d S ©N)
r   Ś
COMM_WORLDŚcommŚGet_rankŚrankŚGet_sizeŚsizeŚ
cuda_awarer   Ścompression_backend)Śselfr   © r   śN/home/ubuntu/.local/lib/python3.10/site-packages/deepspeed/runtime/comm/mpi.pyŚ__init__   s
   zMpiBackend.__init__c           	      C   s`   g }||kr$t |D ]}||kr| |j|| |d” q
|||< q
|S | |j||d” |S )N)Śsource)Śdest)ŚrangeŚappendŚIrecvŚIsend)	r   r	   r   r   ŚsendbufŚrecbufŚrootŚreqŚidxr   r   r   Ś
my_igather   s   
’zMpiBackend.my_igatherc              	   C   sp   g }t |D ]}	| j|||||	 ||	d}
||
7 }qt |D ]}	| j||||||	d}||7 }qtj |” d S )N©r   )r   r   r   ŚRequestŚWaitall)r   r	   Ś
world_sizer   Ścupy_sign_list_packedŚcupy_recvbuf_signŚcupy_worker_scaleŚcupy_recvbuf_scaleŚrequestsr   Śreq_signŚ	req_scaler   r   r   Śgather_cuda$   s   

zMpiBackend.gather_cudac              	   C   s<  t j||| jg|d jd}t j|dg|jd}	|}
t|D ]}t || ”|
|< qt |”}t |”}	tj ”  	”  g }t|D ]}| j
||||
| ||d}||7 }qBt|D ]}| j
|||||	|d}||7 }qZtj |” t |”}t|D ]}t |
| ”||< q{t |”}t |	”}tj ”  	”  ||||fS )Nr   ©Śdtypeé   r   )ŚnpŚzerosr   r+   r   ŚcupyŚasnumpyŚcudaŚget_current_streamŚsynchronizer   r   r   r    Śasarray)r   r	   r!   r   r"   r#   r$   r%   Śnumpy_recvbuf_signŚnumpy_recvbuf_scaleŚnumpy_sign_list_packedr   Śnumpy_worker_scaler&   r'   r(   r   r   r   Śgather_host2   s>   ’

ū




zMpiBackend.gather_hostc                 C   s   |  ||” |  ||” d S r   )Ś	Allgather)r   r   Ścupy_server_sign_packedŚcupy_recvbuf_sign_serverŚcupy_server_scaleŚcupy_recvbuf_scale_serverr   r   r   Śallgather_cudac   s   zMpiBackend.allgather_cudac           
      C   sŹ   t j| ” |jg|jd}t j| ” dg|jd}t |”}t |”}t |”}	t |”}tj ”  	”  | 
||” | 
|	|” | ”  t |”}t |”}t |	”}t |”}tj ”  	”  ||||fS )Nr*   r,   )r-   r.   r
   r   r+   r/   r0   r1   r2   r3   r:   ŚBarrierr4   )
r   r   r;   r<   r=   r>   Śnumpy_recvbuf_sign_serverŚnumpy_recvbuf_scale_serverŚnumpy_server_sign_packedŚnumpy_server_scaler   r   r   Śallgather_hosth   s$   ’







zMpiBackend.allgather_hostŚbuffer_mc              	   C   s^  t   ” }| ” }t|dkrt |”}| ” }| ” }tj |” 	”  ||kr8tj
|| |jd}	t ||	g”}| |” tj |”t t |”” }
| ||
| ”  d” ”  ”  d” d”  ” | j | j | ”  d” ” ”| j”}| j |
”}tj
| j|| j jg|d jd}tj
| jdg|jd}t   ” }| jr®|  | j| j| j||||” n|   | j| j| j||||”\}}}}t   ” }d }| j !t "| ” ” #| jd”” ”  d” d” | j !|” d| j ”” $d”}| |” tj |”t | ” ” }| ||| ”  d” ”  ”  d” d”  ” | j |”}| j | j | ”  d” ” ”d”}d }tj
| j|d jg|jd}tj
| jdg|jd}d }| jr^|  %| j|d |||” n|  &| j|d |||”\}}}}d }|j' (| j !t "| ” ” #| jd”” ”  d” d” | j !|”” ” j'” ||kr”|d| }t|dkr­| #|”}|S )Nr,   )Śdeviceg      ąæg       @r   r*   é’’’’))Śtimer   ŚlenŚtorchŚflattenŚnumelr/   r1   ŚDeviceŚuser.   rG   ŚcatŚadd_ŚlinalgŚnormr-   ŚsqrtŚset_ŚsignŚboolŚfloatŚmul_r   Ścompress_by_chunkŚ
torch2cupyŚsign_r	   r+   r   r)   r   r9   Ś
cupy2torchŚ
unpackbitsŚreshapeŚsumr?   rE   ŚdataŚcopy_)r   rF   Śworker_errorŚserver_errorŚ
local_rankŚall_start_timeŚoriginal_shapeŚoriginal_sizeŚworker_error_sizeŚempty_tensorŚworker_scaler"   r$   r#   r%   Śgather_startŚ_Ś
gather_endŚcompensated_server_mŚserver_scaler=   r;   r<   r>   r   r   r   Ścompressed_allreduce   s   

0’’’ž’’ž
$’’’’ž’
’ż

zMpiBackend.compressed_allreduceN)Ś__name__Ś
__module__Ś__qualname__r   r   r)   r9   r?   rE   rK   Śtensorrq   r   r   r   r   r      s    1r   )rK   r/   rI   Śnumpyr-   Śmpi4pyr   Ś"deepspeed.runtime.compression.cupyr   Śobjectr   r   r   r   r   Ś<module>   s   