Heavy log crashes the iOS app when running Pytorch model on iOS

Question

Recently I have learned to export pytorch model (either by torch,jit.trace or torch.jit.script) into a .pt file for android and iOS. The model ran well with no logging on linux or android. But on iOS it generates a long log that starts with:

[W TensorImpl.h:1408] Warning: Named tensors and all their associated APIs are an experimental feature and subject to change. Please do not use them for anything important until they are released as stable. (function operator())

and the remaining of the log is filled with odd symbols, such as: \321 \322 \323 \324 \325 \326 \327 \330 \331 \332 \333 \334 \335 \336 \337 \340 \341 \342 \343 \344 \345 \346 \347 \350 \351 \352 \353 \354 \355 \356 \357 \360 \361 \362 \363 \364 \365 \366 \367 \370 \371 \372 \373 \374 \375 \376 \377 \377\377\377\377\377\377\377\377C _\363 \377 \213\363 \377 \226\363 \377 \364 \377 7\364 \377 \360 RuneMagANONE \375\377 B B B B B @ ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( a ( ( ( ( ( ( ( \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 \211 ( ( ( ( ( ( ( ( ( ( a e ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ a b c d e f g h i j k l m n o p q r s t u v w x y z [ \ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ \200 \201 \202 \203 \204 \205 \206 \207 \210 \211 \212 \213 \214 \215 \216 \217 \220 \221 \222 \223 \224 \225 \226 \227 \230 \231 \232 \233 \234 \235 \236 \237 \240 \241 \242 \243 \244 \245 \246 \247 \250 \251 \252 \253 \254 \255 \256 \257 \260 \261 \262 \263 \264 \265 \266 \267 \270 \271 \272 \273 \274 \275 \276 \277 \300 \301 \302 \303 \304 \305 \306 \307 \310 \311 \312 \313 \314 \315 \316 \317 \320 \321 \322 \323 \324 \325 \326 \327 \330 \331 \332 \333 \334 \335 \336 \337 \340 \341 \342 \343 \344 \345 \346 \347 \350 \351 \352 \353 \354 \355 \356 \357 \360 \361 \362 \363 \364 \365 \366 \367 \370 \371 \372 \373 \374 \375 \376 \377 a e ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` A B C D E F G H I J K L M N O P Q R S T U V W X Y Z { | } ~ \200 , so much so that the log .txt file is 145MB, which sometimes crashes the app. I have used the latest Pytorch version but this log still appears.

Does anyone know how to avoid this log on iOS device?